* [v13, 5/8] soc: fsl: add GUTS driver for QorIQ platforms
From: Scott Wood @ 2016-10-28 4:45 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477625554-46700-6-git-send-email-yangbo.lu@nxp.com>
On Fri, 2016-10-28 at 11:32 +0800, Yangbo Lu wrote:
> + guts->regs = of_iomap(np, 0);
> + if (!guts->regs)
> + return -ENOMEM;
> +
> + /* Register soc device */
> + machine = of_flat_dt_get_machine_name();
> + if (machine)
> + soc_dev_attr.machine = devm_kstrdup(dev, machine,
> GFP_KERNEL);
> +
> + svr = fsl_guts_get_svr();
> + soc_die = fsl_soc_die_match(svr, fsl_soc_die);
> + if (soc_die) {
> + soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL,
> + ?????"QorIQ %s", soc_die-
> >die);
> + } else {
> + soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL,
> "QorIQ");
> + }
> + soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL,
> + ?????"svr:0x%08x", svr);
> + soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
> + ???????SVR_MAJ(svr), SVR_MIN(svr));
> +
> + soc_dev = soc_device_register(&soc_dev_attr);
> + if (IS_ERR(soc_dev))
> + return PTR_ERR(soc_dev);
ioremap leaks on this error path. ?Use devm_ioremap_resource().
-Scott
^ permalink raw reply
* [PATCH V2] arm64: Add support of R_AARCH64_PREL32 relocation in purgatory
From: Pratyush Anand @ 2016-10-28 4:16 UTC (permalink / raw)
To: linux-arm-kernel
gcc version in fedora koji is 6.2.1-2.fc25. kexec-tools compiled with this
gcc produced another relocation error:
machine_apply_elf_rel: ERROR Unknown type: 261
This patch fixes the above error.
Signed-off-by: Pratyush Anand <panand@redhat.com>
---
v1 -> v2: fixed line width to less than 80 chars
kexec/arch/arm64/kexec-arm64.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/kexec/arch/arm64/kexec-arm64.c b/kexec/arch/arm64/kexec-arm64.c
index 218f0bc832cd..eb0c3b87354e 100644
--- a/kexec/arch/arm64/kexec-arm64.c
+++ b/kexec/arch/arm64/kexec-arm64.c
@@ -720,6 +720,10 @@ void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *UNUSED(sym),
# define R_AARCH64_ABS64 257
#endif
+#if !defined(R_AARCH64_PREL32)
+# define R_AARCH64_PREL32 261
+#endif
+
#if !defined(R_AARCH64_LD_PREL_LO19)
# define R_AARCH64_LD_PREL_LO19 273
#endif
@@ -761,6 +765,12 @@ void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *UNUSED(sym),
loc64 = ptr;
*loc64 = cpu_to_elf64(ehdr, elf64_to_cpu(ehdr, *loc64) + value);
break;
+ case R_AARCH64_PREL32:
+ type = "PREL32";
+ loc32 = ptr;
+ *loc32 = cpu_to_elf32(ehdr,
+ elf32_to_cpu(ehdr, *loc32) + value - address);
+ break;
case R_AARCH64_LD_PREL_LO19:
type = "LD_PREL_LO19";
loc32 = ptr;
--
2.7.4
^ permalink raw reply related
* [PATCH v3 1/3] PM / OPP: Expose _of_get_opp_desc_node as dev_pm_opp API
From: Viresh Kumar @ 2016-10-28 4:05 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <20161027214131.1725-2-d-gerlach@ti.com>
On 27-10-16, 16:41, Dave Gerlach wrote:
> Move _of_get_opp_desc_node into include/linux/pm_opp.h and rename it
> dev_pm_opp_of_get_opp_desc_node to allow other drivers, such as platform
> OPP and cpufreq drivers, to make use of it.
>
> Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
> ---
> drivers/base/power/opp/of.c | 8 ++++----
> drivers/base/power/opp/opp.h | 1 -
> include/linux/pm_opp.h | 6 ++++++
> 3 files changed, 10 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/base/power/opp/of.c b/drivers/base/power/opp/of.c
> index 5552211e6fcd..215f5a538c78 100644
> --- a/drivers/base/power/opp/of.c
> +++ b/drivers/base/power/opp/of.c
> @@ -198,7 +198,7 @@ void dev_pm_opp_of_remove_table(struct device *dev)
> EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
>
> /* Returns opp descriptor node for a device, caller must do of_node_put() */
> -struct device_node *_of_get_opp_desc_node(struct device *dev)
> +struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
Export as well ?
--
viresh
^ permalink raw reply
* [PATCH 7/7] mfd: tps65217: Fix mismatched interrupt number
From: Milo Kim @ 2016-10-28 4:04 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <20161026135631.GC13127@dell>
On 10/26/2016 10:56 PM, Lee Jones wrote:
>> diff --git a/include/linux/mfd/tps65217.h b/include/linux/mfd/tps65217.h
>> > index 4ccda89..75a3a5f 100644
>> > --- a/include/linux/mfd/tps65217.h
>> > +++ b/include/linux/mfd/tps65217.h
>> > @@ -235,9 +235,9 @@ struct tps65217_bl_pdata {
>> > };
>> >
>> > enum tps65217_irq_type {
>> > - TPS65217_IRQ_PB,
>> > - TPS65217_IRQ_AC,
>> > TPS65217_IRQ_USB,
>> > + TPS65217_IRQ_AC,
>> > + TPS65217_IRQ_PB,
>> > TPS65217_NUM_IRQ
>> > };
> This is why using enum for these types of assignments is sometimes
> dangerous. It's probably best to be explicit.
I agree with you. Let me fix in v2 - use #define instead of enum type.
Best regards,
Milo
^ permalink raw reply
* [PATCH 5/7] ARM: dts: am335x: Add the charger interrupt
From: Milo Kim @ 2016-10-28 4:01 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <CAOCHtYgBTq0a1FAMQJb5VoLPWBHYkF3rH_Km6U9u6ep=8ApZuQ@mail.gmail.com>
On 10/22/2016 05:47 AM, Robert Nelson wrote:
>> +#include <dt-bindings/mfd/tps65217.h>
> ^ this hasn't been posted nor pushed to mainline yet.. ;)
>
Oops! I've created this file but not captured not only in my git tree
but also in my head! Thanks for your review.
Best regards,
Milo
^ permalink raw reply
* [v13, 8/8] mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0
From: Yangbo Lu @ 2016-10-28 3:32 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477625554-46700-1-git-send-email-yangbo.lu@nxp.com>
The eSDHC of T4240-R1.0-R2.0 has incorrect vender version and spec version.
Acturally the right version numbers should be VVN=0x13 and SVN = 0x1.
This patch adds the GUTS driver support for eSDHC driver to match SoC.
And fix host version to avoid that incorrect version numbers break down
the ADMA data transfer.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Scott Wood <oss@buserror.net>
---
Changes for v2:
- Got SVR through iomap instead of dts
Changes for v3:
- Managed GUTS through syscon instead of iomap in eSDHC driver
Changes for v4:
- Got SVR by GUTS driver instead of SYSCON
Changes for v5:
- Changed to get SVR through API fsl_guts_get_svr()
- Combined patch 4, patch 5 and patch 6 into one
Changes for v6:
- Added 'Acked-by: Ulf Hansson'
Changes for v7:
- None
Changes for v8:
- Added 'Acked-by: Scott Wood'
Changes for v9:
- None
Changes for v10:
- None
Changes for v11:
- Changed to use soc_device_match
Changes for v12:
- Matched soc through .family field instead of .soc_id
Changes for v13:
- None
---
drivers/mmc/host/Kconfig | 1 +
drivers/mmc/host/sdhci-of-esdhc.c | 20 ++++++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 5274f50..a1135a9 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -144,6 +144,7 @@ config MMC_SDHCI_OF_ESDHC
depends on MMC_SDHCI_PLTFM
depends on PPC || ARCH_MXC || ARCH_LAYERSCAPE
select MMC_SDHCI_IO_ACCESSORS
+ select FSL_GUTS
help
This selects the Freescale eSDHC controller support.
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index fb71c86..57bdb9e 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -18,6 +18,7 @@
#include <linux/of.h>
#include <linux/delay.h>
#include <linux/module.h>
+#include <linux/sys_soc.h>
#include <linux/mmc/host.h>
#include "sdhci-pltfm.h"
#include "sdhci-esdhc.h"
@@ -28,6 +29,7 @@
struct sdhci_esdhc {
u8 vendor_ver;
u8 spec_ver;
+ bool quirk_incorrect_hostver;
};
/**
@@ -73,6 +75,8 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host,
static u16 esdhc_readw_fixup(struct sdhci_host *host,
int spec_reg, u32 value)
{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host);
u16 ret;
int shift = (spec_reg & 0x2) * 8;
@@ -80,6 +84,12 @@ static u16 esdhc_readw_fixup(struct sdhci_host *host,
ret = value & 0xffff;
else
ret = (value >> shift) & 0xffff;
+ /* Workaround for T4240-R1.0-R2.0 eSDHC which has incorrect
+ * vendor version and spec version information.
+ */
+ if ((spec_reg == SDHCI_HOST_VERSION) &&
+ (esdhc->quirk_incorrect_hostver))
+ ret = (VENDOR_V_23 << SDHCI_VENDOR_VER_SHIFT) | SDHCI_SPEC_200;
return ret;
}
@@ -558,6 +568,12 @@ static const struct sdhci_pltfm_data sdhci_esdhc_le_pdata = {
.ops = &sdhci_esdhc_le_ops,
};
+static struct soc_device_attribute soc_incorrect_hostver[] = {
+ { .family = "QorIQ T4240", .revision = "1.0", },
+ { .family = "QorIQ T4240", .revision = "2.0", },
+ { },
+};
+
static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host;
@@ -571,6 +587,10 @@ static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host)
esdhc->vendor_ver = (host_ver & SDHCI_VENDOR_VER_MASK) >>
SDHCI_VENDOR_VER_SHIFT;
esdhc->spec_ver = host_ver & SDHCI_SPEC_VER_MASK;
+ if (soc_device_match(soc_incorrect_hostver))
+ esdhc->quirk_incorrect_hostver = true;
+ else
+ esdhc->quirk_incorrect_hostver = false;
}
static int sdhci_esdhc_probe(struct platform_device *pdev)
--
2.1.0.27.g96db324
^ permalink raw reply related
* [v13, 7/8] base: soc: introduce soc_device_match() interface
From: Yangbo Lu @ 2016-10-28 3:32 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477625554-46700-1-git-send-email-yangbo.lu@nxp.com>
From: Arnd Bergmann <arnd@arndb.de>
We keep running into cases where device drivers want to know the exact
version of the a SoC they are currently running on. In the past, this has
usually been done through a vendor specific API that can be called by a
driver, or by directly accessing some kind of version register that is
not part of the device itself but that belongs to a global register area
of the chip.
Common reasons for doing this include:
- A machine is not using devicetree or similar for passing data about
on-chip devices, but just announces their presence using boot-time
platform devices, and the machine code itself does not care about the
revision.
- There is existing firmware or boot loaders with existing DT binaries
with generic compatible strings that do not identify the particular
revision of each device, but the driver knows which SoC revisions
include which part.
- A prerelease version of a chip has some quirks and we are using the same
version of the bootloader and the DT blob on both the prerelease and the
final version. An update of the DT binding seems inappropriate because
that would involve maintaining multiple copies of the dts and/or
bootloader.
This patch introduces the soc_device_match() interface that is meant to
work like of_match_node() but instead of identifying the version of a
device, it identifies the SoC itself using a vendor-agnostic interface.
Unlike of_match_node(), we do not do an exact string compare but instead
use glob_match() to allow wildcards in strings.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Changes for v11:
- Added this patch for soc match
Changes for v12:
- Corrected the author
- Rewrited soc_device_match with while loop
Changes for v13:
- Added ack from Greg
---
drivers/base/Kconfig | 1 +
drivers/base/soc.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
include/linux/sys_soc.h | 3 +++
3 files changed, 70 insertions(+)
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index fdf44ca..991b21e 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -235,6 +235,7 @@ config GENERIC_CPU_AUTOPROBE
config SOC_BUS
bool
+ select GLOB
source "drivers/base/regmap/Kconfig"
diff --git a/drivers/base/soc.c b/drivers/base/soc.c
index b63f23e..0c5cf87 100644
--- a/drivers/base/soc.c
+++ b/drivers/base/soc.c
@@ -13,6 +13,7 @@
#include <linux/spinlock.h>
#include <linux/sys_soc.h>
#include <linux/err.h>
+#include <linux/glob.h>
static DEFINE_IDA(soc_ida);
@@ -159,3 +160,68 @@ static int __init soc_bus_register(void)
return bus_register(&soc_bus_type);
}
core_initcall(soc_bus_register);
+
+static int soc_device_match_one(struct device *dev, void *arg)
+{
+ struct soc_device *soc_dev = container_of(dev, struct soc_device, dev);
+ const struct soc_device_attribute *match = arg;
+
+ if (match->machine &&
+ !glob_match(match->machine, soc_dev->attr->machine))
+ return 0;
+
+ if (match->family &&
+ !glob_match(match->family, soc_dev->attr->family))
+ return 0;
+
+ if (match->revision &&
+ !glob_match(match->revision, soc_dev->attr->revision))
+ return 0;
+
+ if (match->soc_id &&
+ !glob_match(match->soc_id, soc_dev->attr->soc_id))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * soc_device_match - identify the SoC in the machine
+ * @matches: zero-terminated array of possible matches
+ *
+ * returns the first matching entry of the argument array, or NULL
+ * if none of them match.
+ *
+ * This function is meant as a helper in place of of_match_node()
+ * in cases where either no device tree is available or the information
+ * in a device node is insufficient to identify a particular variant
+ * by its compatible strings or other properties. For new devices,
+ * the DT binding should always provide unique compatible strings
+ * that allow the use of of_match_node() instead.
+ *
+ * The calling function can use the .data entry of the
+ * soc_device_attribute to pass a structure or function pointer for
+ * each entry.
+ */
+const struct soc_device_attribute *soc_device_match(
+ const struct soc_device_attribute *matches)
+{
+ int ret = 0;
+
+ if (!matches)
+ return NULL;
+
+ while (!ret) {
+ if (!(matches->machine || matches->family ||
+ matches->revision || matches->soc_id))
+ break;
+ ret = bus_for_each_dev(&soc_bus_type, NULL, (void *)matches,
+ soc_device_match_one);
+ if (!ret)
+ matches++;
+ else
+ return matches;
+ }
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(soc_device_match);
diff --git a/include/linux/sys_soc.h b/include/linux/sys_soc.h
index 2739ccb..9f5eb06 100644
--- a/include/linux/sys_soc.h
+++ b/include/linux/sys_soc.h
@@ -13,6 +13,7 @@ struct soc_device_attribute {
const char *family;
const char *revision;
const char *soc_id;
+ const void *data;
};
/**
@@ -34,4 +35,6 @@ void soc_device_unregister(struct soc_device *soc_dev);
*/
struct device *soc_device_to_device(struct soc_device *soc);
+const struct soc_device_attribute *soc_device_match(
+ const struct soc_device_attribute *matches);
#endif /* __SOC_BUS_H */
--
2.1.0.27.g96db324
^ permalink raw reply related
* [v13, 6/8] MAINTAINERS: add entry for Freescale SoC drivers
From: Yangbo Lu @ 2016-10-28 3:32 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477625554-46700-1-git-send-email-yangbo.lu@nxp.com>
Add maintainer entry for Freescale SoC drivers including
the QE library and the GUTS driver now. Also add maintainer
for QE library.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
Acked-by: Qiang Zhao <qiang.zhao@nxp.com>
---
Changes for v8:
- Added this patch
Changes for v9:
- Added linux-arm mail list
- Removed GUTS driver entry
Changes for v10:
- Changed 'DRIVER' to 'DRIVERS'
- Added 'Acked-by' of Scott and Qiang
Changes for v11:
- None
Changes for v12:
- None
Changes for v13:
- None
---
MAINTAINERS | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/MAINTAINERS b/MAINTAINERS
index c72fa18..cf3aaee 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5037,9 +5037,18 @@ S: Maintained
F: drivers/net/ethernet/freescale/fman
F: Documentation/devicetree/bindings/powerpc/fsl/fman.txt
+FREESCALE SOC DRIVERS
+M: Scott Wood <oss@buserror.net>
+L: linuxppc-dev at lists.ozlabs.org
+L: linux-arm-kernel at lists.infradead.org
+S: Maintained
+F: drivers/soc/fsl/
+F: include/linux/fsl/
+
FREESCALE QUICC ENGINE LIBRARY
+M: Qiang Zhao <qiang.zhao@nxp.com>
L: linuxppc-dev at lists.ozlabs.org
-S: Orphan
+S: Maintained
F: drivers/soc/fsl/qe/
F: include/soc/fsl/*qe*.h
F: include/soc/fsl/*ucc*.h
--
2.1.0.27.g96db324
^ permalink raw reply related
* [v13, 5/8] soc: fsl: add GUTS driver for QorIQ platforms
From: Yangbo Lu @ 2016-10-28 3:32 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477625554-46700-1-git-send-email-yangbo.lu@nxp.com>
The global utilities block controls power management, I/O device
enabling, power-onreset(POR) configuration monitoring, alternate
function selection for multiplexed signals,and clock control.
This patch adds a driver to manage and access global utilities block.
Initially only reading SVR and registering soc device are supported.
Other guts accesses, such as reading RCW, should eventually be moved
into this driver as well.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v4:
- Added this patch
Changes for v5:
- Modified copyright info
- Changed MODULE_LICENSE to GPL
- Changed EXPORT_SYMBOL_GPL to EXPORT_SYMBOL
- Made FSL_GUTS user-invisible
- Added a complete compatible list for GUTS
- Stored guts info in file-scope variable
- Added mfspr() getting SVR
- Redefined GUTS APIs
- Called fsl_guts_init rather than using platform driver
- Removed useless parentheses
- Removed useless 'extern' key words
Changes for v6:
- Made guts thread safe in fsl_guts_init
Changes for v7:
- Removed 'ifdef' for function declaration in guts.h
Changes for v8:
- Fixes lines longer than 80 characters checkpatch issue
- Added 'Acked-by: Scott Wood'
Changes for v9:
- None
Changes for v10:
- None
Changes for v11:
- Changed to platform driver
Changes for v12:
- Removed "signed-off-by: Scott"
- Defined fsl_soc_die_attr struct array instead of
soc_device_attribute
- Re-designed soc_device_attribute for QorIQ SoC
- Other minor fixes
Changes for v13:
- Rebased
- Removed text after 'bool' in Kconfig
- Removed ARCH ifdefs
- Added more bits for ls1021a mask
- Used devm
---
drivers/soc/Kconfig | 3 +-
drivers/soc/fsl/Kconfig | 18 ++++
drivers/soc/fsl/Makefile | 1 +
drivers/soc/fsl/guts.c | 236 +++++++++++++++++++++++++++++++++++++++++++++++
include/linux/fsl/guts.h | 125 +++++++++++++++----------
5 files changed, 333 insertions(+), 50 deletions(-)
create mode 100644 drivers/soc/fsl/Kconfig
create mode 100644 drivers/soc/fsl/guts.c
diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
index e6e90e8..f31bceb 100644
--- a/drivers/soc/Kconfig
+++ b/drivers/soc/Kconfig
@@ -1,8 +1,7 @@
menu "SOC (System On Chip) specific Drivers"
source "drivers/soc/bcm/Kconfig"
-source "drivers/soc/fsl/qbman/Kconfig"
-source "drivers/soc/fsl/qe/Kconfig"
+source "drivers/soc/fsl/Kconfig"
source "drivers/soc/mediatek/Kconfig"
source "drivers/soc/qcom/Kconfig"
source "drivers/soc/rockchip/Kconfig"
diff --git a/drivers/soc/fsl/Kconfig b/drivers/soc/fsl/Kconfig
new file mode 100644
index 0000000..7a9fb9b
--- /dev/null
+++ b/drivers/soc/fsl/Kconfig
@@ -0,0 +1,18 @@
+#
+# Freescale SOC drivers
+#
+
+source "drivers/soc/fsl/qbman/Kconfig"
+source "drivers/soc/fsl/qe/Kconfig"
+
+config FSL_GUTS
+ bool
+ select SOC_BUS
+ help
+ The global utilities block controls power management, I/O device
+ enabling, power-onreset(POR) configuration monitoring, alternate
+ function selection for multiplexed signals,and clock control.
+ This driver is to manage and access global utilities block.
+ Initially only reading SVR and registering soc device are supported.
+ Other guts accesses, such as reading RCW, should eventually be moved
+ into this driver as well.
diff --git a/drivers/soc/fsl/Makefile b/drivers/soc/fsl/Makefile
index 75e1f53..44b3beb 100644
--- a/drivers/soc/fsl/Makefile
+++ b/drivers/soc/fsl/Makefile
@@ -5,3 +5,4 @@
obj-$(CONFIG_FSL_DPAA) += qbman/
obj-$(CONFIG_QUICC_ENGINE) += qe/
obj-$(CONFIG_CPM) += qe/
+obj-$(CONFIG_FSL_GUTS) += guts.o
diff --git a/drivers/soc/fsl/guts.c b/drivers/soc/fsl/guts.c
new file mode 100644
index 0000000..1f356ed
--- /dev/null
+++ b/drivers/soc/fsl/guts.c
@@ -0,0 +1,236 @@
+/*
+ * Freescale QorIQ Platforms GUTS Driver
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/of_fdt.h>
+#include <linux/sys_soc.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/fsl/guts.h>
+#include <linux/fsl/svr.h>
+
+struct guts {
+ struct ccsr_guts __iomem *regs;
+ bool little_endian;
+};
+
+struct fsl_soc_die_attr {
+ char *die;
+ u32 svr;
+ u32 mask;
+};
+
+static struct guts *guts;
+static struct soc_device_attribute soc_dev_attr;
+static struct soc_device *soc_dev;
+
+
+/* SoC die attribute definition for QorIQ platform */
+static const struct fsl_soc_die_attr fsl_soc_die[] = {
+ /*
+ * Power Architecture-based SoCs T Series
+ */
+
+ /* Die: T4240, SoC: T4240/T4160/T4080 */
+ { .die = "T4240",
+ .svr = 0x82400000,
+ .mask = 0xfff00000,
+ },
+ /* Die: T1040, SoC: T1040/T1020/T1042/T1022 */
+ { .die = "T1040",
+ .svr = 0x85200000,
+ .mask = 0xfff00000,
+ },
+ /* Die: T2080, SoC: T2080/T2081 */
+ { .die = "T2080",
+ .svr = 0x85300000,
+ .mask = 0xfff00000,
+ },
+ /* Die: T1024, SoC: T1024/T1014/T1023/T1013 */
+ { .die = "T1024",
+ .svr = 0x85400000,
+ .mask = 0xfff00000,
+ },
+
+ /*
+ * ARM-based SoCs LS Series
+ */
+
+ /* Die: LS1043A, SoC: LS1043A/LS1023A */
+ { .die = "LS1043A",
+ .svr = 0x87920000,
+ .mask = 0xffff0000,
+ },
+ /* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */
+ { .die = "LS2080A",
+ .svr = 0x87010000,
+ .mask = 0xff3f0000,
+ },
+ /* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */
+ { .die = "LS1088A",
+ .svr = 0x87030000,
+ .mask = 0xff3f0000,
+ },
+ /* Die: LS1012A, SoC: LS1012A */
+ { .die = "LS1012A",
+ .svr = 0x87040000,
+ .mask = 0xffff0000,
+ },
+ /* Die: LS1046A, SoC: LS1046A/LS1026A */
+ { .die = "LS1046A",
+ .svr = 0x87070000,
+ .mask = 0xffff0000,
+ },
+ /* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */
+ { .die = "LS2088A",
+ .svr = 0x87090000,
+ .mask = 0xff3f0000,
+ },
+ /* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A */
+ { .die = "LS1021A",
+ .svr = 0x87000000,
+ .mask = 0xfff70000,
+ },
+ { },
+};
+
+static const struct fsl_soc_die_attr *fsl_soc_die_match(
+ u32 svr, const struct fsl_soc_die_attr *matches)
+{
+ while (matches->svr) {
+ if (matches->svr == (svr & matches->mask))
+ return matches;
+ matches++;
+ };
+ return NULL;
+}
+
+u32 fsl_guts_get_svr(void)
+{
+ u32 svr = 0;
+
+ if (!guts || !guts->regs)
+ return svr;
+
+ if (guts->little_endian)
+ svr = ioread32(&guts->regs->svr);
+ else
+ svr = ioread32be(&guts->regs->svr);
+
+ return svr;
+}
+EXPORT_SYMBOL(fsl_guts_get_svr);
+
+static int fsl_guts_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct device *dev = &pdev->dev;
+ const struct fsl_soc_die_attr *soc_die;
+ const char *machine;
+ u32 svr;
+
+ /* Initialize guts */
+ guts = devm_kzalloc(dev, sizeof(*guts), GFP_KERNEL);
+ if (!guts)
+ return -ENOMEM;
+
+ guts->little_endian = of_property_read_bool(np, "little-endian");
+
+ guts->regs = of_iomap(np, 0);
+ if (!guts->regs)
+ return -ENOMEM;
+
+ /* Register soc device */
+ machine = of_flat_dt_get_machine_name();
+ if (machine)
+ soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL);
+
+ svr = fsl_guts_get_svr();
+ soc_die = fsl_soc_die_match(svr, fsl_soc_die);
+ if (soc_die) {
+ soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL,
+ "QorIQ %s", soc_die->die);
+ } else {
+ soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ");
+ }
+ soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL,
+ "svr:0x%08x", svr);
+ soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
+ SVR_MAJ(svr), SVR_MIN(svr));
+
+ soc_dev = soc_device_register(&soc_dev_attr);
+ if (IS_ERR(soc_dev))
+ return PTR_ERR(soc_dev);
+
+ pr_info("Machine: %s\n", soc_dev_attr.machine);
+ pr_info("SoC family: %s\n", soc_dev_attr.family);
+ pr_info("SoC ID: %s, Revision: %s\n",
+ soc_dev_attr.soc_id, soc_dev_attr.revision);
+ return 0;
+}
+
+static int fsl_guts_remove(struct platform_device *dev)
+{
+ soc_device_unregister(soc_dev);
+ iounmap(guts->regs);
+ return 0;
+}
+
+/*
+ * Table for matching compatible strings, for device tree
+ * guts node, for Freescale QorIQ SOCs.
+ */
+static const struct of_device_id fsl_guts_of_match[] = {
+ { .compatible = "fsl,qoriq-device-config-1.0", },
+ { .compatible = "fsl,qoriq-device-config-2.0", },
+ { .compatible = "fsl,p1010-guts", },
+ { .compatible = "fsl,p1020-guts", },
+ { .compatible = "fsl,p1021-guts", },
+ { .compatible = "fsl,p1022-guts", },
+ { .compatible = "fsl,p1023-guts", },
+ { .compatible = "fsl,p2020-guts", },
+ { .compatible = "fsl,bsc9131-guts", },
+ { .compatible = "fsl,bsc9132-guts", },
+ { .compatible = "fsl,mpc8536-guts", },
+ { .compatible = "fsl,mpc8544-guts", },
+ { .compatible = "fsl,mpc8548-guts", },
+ { .compatible = "fsl,mpc8568-guts", },
+ { .compatible = "fsl,mpc8569-guts", },
+ { .compatible = "fsl,mpc8572-guts", },
+ { .compatible = "fsl,ls1021a-dcfg", },
+ { .compatible = "fsl,ls1043a-dcfg", },
+ { .compatible = "fsl,ls2080a-dcfg", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, fsl_guts_of_match);
+
+static struct platform_driver fsl_guts_driver = {
+ .driver = {
+ .name = "fsl-guts",
+ .of_match_table = fsl_guts_of_match,
+ },
+ .probe = fsl_guts_probe,
+ .remove = fsl_guts_remove,
+};
+
+static int __init fsl_guts_init(void)
+{
+ return platform_driver_register(&fsl_guts_driver);
+}
+core_initcall(fsl_guts_init);
+
+static void __exit fsl_guts_exit(void)
+{
+ platform_driver_unregister(&fsl_guts_driver);
+}
+module_exit(fsl_guts_exit);
diff --git a/include/linux/fsl/guts.h b/include/linux/fsl/guts.h
index 649e917..3efa3b8 100644
--- a/include/linux/fsl/guts.h
+++ b/include/linux/fsl/guts.h
@@ -29,83 +29,112 @@
* #ifdefs.
*/
struct ccsr_guts {
- __be32 porpllsr; /* 0x.0000 - POR PLL Ratio Status Register */
- __be32 porbmsr; /* 0x.0004 - POR Boot Mode Status Register */
- __be32 porimpscr; /* 0x.0008 - POR I/O Impedance Status and Control Register */
- __be32 pordevsr; /* 0x.000c - POR I/O Device Status Register */
- __be32 pordbgmsr; /* 0x.0010 - POR Debug Mode Status Register */
- __be32 pordevsr2; /* 0x.0014 - POR device status register 2 */
+ u32 porpllsr; /* 0x.0000 - POR PLL Ratio Status Register */
+ u32 porbmsr; /* 0x.0004 - POR Boot Mode Status Register */
+ u32 porimpscr; /* 0x.0008 - POR I/O Impedance Status and
+ * Control Register
+ */
+ u32 pordevsr; /* 0x.000c - POR I/O Device Status Register */
+ u32 pordbgmsr; /* 0x.0010 - POR Debug Mode Status Register */
+ u32 pordevsr2; /* 0x.0014 - POR device status register 2 */
u8 res018[0x20 - 0x18];
- __be32 porcir; /* 0x.0020 - POR Configuration Information Register */
+ u32 porcir; /* 0x.0020 - POR Configuration Information
+ * Register
+ */
u8 res024[0x30 - 0x24];
- __be32 gpiocr; /* 0x.0030 - GPIO Control Register */
+ u32 gpiocr; /* 0x.0030 - GPIO Control Register */
u8 res034[0x40 - 0x34];
- __be32 gpoutdr; /* 0x.0040 - General-Purpose Output Data Register */
+ u32 gpoutdr; /* 0x.0040 - General-Purpose Output Data
+ * Register
+ */
u8 res044[0x50 - 0x44];
- __be32 gpindr; /* 0x.0050 - General-Purpose Input Data Register */
+ u32 gpindr; /* 0x.0050 - General-Purpose Input Data
+ * Register
+ */
u8 res054[0x60 - 0x54];
- __be32 pmuxcr; /* 0x.0060 - Alternate Function Signal Multiplex Control */
- __be32 pmuxcr2; /* 0x.0064 - Alternate function signal multiplex control 2 */
- __be32 dmuxcr; /* 0x.0068 - DMA Mux Control Register */
+ u32 pmuxcr; /* 0x.0060 - Alternate Function Signal
+ * Multiplex Control
+ */
+ u32 pmuxcr2; /* 0x.0064 - Alternate function signal
+ * multiplex control 2
+ */
+ u32 dmuxcr; /* 0x.0068 - DMA Mux Control Register */
u8 res06c[0x70 - 0x6c];
- __be32 devdisr; /* 0x.0070 - Device Disable Control */
+ u32 devdisr; /* 0x.0070 - Device Disable Control */
#define CCSR_GUTS_DEVDISR_TB1 0x00001000
#define CCSR_GUTS_DEVDISR_TB0 0x00004000
- __be32 devdisr2; /* 0x.0074 - Device Disable Control 2 */
+ u32 devdisr2; /* 0x.0074 - Device Disable Control 2 */
u8 res078[0x7c - 0x78];
- __be32 pmjcr; /* 0x.007c - 4 Power Management Jog Control Register */
- __be32 powmgtcsr; /* 0x.0080 - Power Management Status and Control Register */
- __be32 pmrccr; /* 0x.0084 - Power Management Reset Counter Configuration Register */
- __be32 pmpdccr; /* 0x.0088 - Power Management Power Down Counter Configuration Register */
- __be32 pmcdr; /* 0x.008c - 4Power management clock disable register */
- __be32 mcpsumr; /* 0x.0090 - Machine Check Summary Register */
- __be32 rstrscr; /* 0x.0094 - Reset Request Status and Control Register */
- __be32 ectrstcr; /* 0x.0098 - Exception reset control register */
- __be32 autorstsr; /* 0x.009c - Automatic reset status register */
- __be32 pvr; /* 0x.00a0 - Processor Version Register */
- __be32 svr; /* 0x.00a4 - System Version Register */
+ u32 pmjcr; /* 0x.007c - 4 Power Management Jog Control
+ * Register
+ */
+ u32 powmgtcsr; /* 0x.0080 - Power Management Status and
+ * Control Register
+ */
+ u32 pmrccr; /* 0x.0084 - Power Management Reset Counter
+ * Configuration Register
+ */
+ u32 pmpdccr; /* 0x.0088 - Power Management Power Down Counter
+ * Configuration Register
+ */
+ u32 pmcdr; /* 0x.008c - 4Power management clock disable
+ * register
+ */
+ u32 mcpsumr; /* 0x.0090 - Machine Check Summary Register */
+ u32 rstrscr; /* 0x.0094 - Reset Request Status and
+ * Control Register
+ */
+ u32 ectrstcr; /* 0x.0098 - Exception reset control register */
+ u32 autorstsr; /* 0x.009c - Automatic reset status register */
+ u32 pvr; /* 0x.00a0 - Processor Version Register */
+ u32 svr; /* 0x.00a4 - System Version Register */
u8 res0a8[0xb0 - 0xa8];
- __be32 rstcr; /* 0x.00b0 - Reset Control Register */
+ u32 rstcr; /* 0x.00b0 - Reset Control Register */
u8 res0b4[0xc0 - 0xb4];
- __be32 iovselsr; /* 0x.00c0 - I/O voltage select status register
+ u32 iovselsr; /* 0x.00c0 - I/O voltage select status register
Called 'elbcvselcr' on 86xx SOCs */
u8 res0c4[0x100 - 0xc4];
- __be32 rcwsr[16]; /* 0x.0100 - Reset Control Word Status registers
+ u32 rcwsr[16]; /* 0x.0100 - Reset Control Word Status registers
There are 16 registers */
u8 res140[0x224 - 0x140];
- __be32 iodelay1; /* 0x.0224 - IO delay control register 1 */
- __be32 iodelay2; /* 0x.0228 - IO delay control register 2 */
+ u32 iodelay1; /* 0x.0224 - IO delay control register 1 */
+ u32 iodelay2; /* 0x.0228 - IO delay control register 2 */
u8 res22c[0x604 - 0x22c];
- __be32 pamubypenr; /* 0x.604 - PAMU bypass enable register */
+ u32 pamubypenr; /* 0x.604 - PAMU bypass enable register */
u8 res608[0x800 - 0x608];
- __be32 clkdvdr; /* 0x.0800 - Clock Divide Register */
+ u32 clkdvdr; /* 0x.0800 - Clock Divide Register */
u8 res804[0x900 - 0x804];
- __be32 ircr; /* 0x.0900 - Infrared Control Register */
+ u32 ircr; /* 0x.0900 - Infrared Control Register */
u8 res904[0x908 - 0x904];
- __be32 dmacr; /* 0x.0908 - DMA Control Register */
+ u32 dmacr; /* 0x.0908 - DMA Control Register */
u8 res90c[0x914 - 0x90c];
- __be32 elbccr; /* 0x.0914 - eLBC Control Register */
+ u32 elbccr; /* 0x.0914 - eLBC Control Register */
u8 res918[0xb20 - 0x918];
- __be32 ddr1clkdr; /* 0x.0b20 - DDR1 Clock Disable Register */
- __be32 ddr2clkdr; /* 0x.0b24 - DDR2 Clock Disable Register */
- __be32 ddrclkdr; /* 0x.0b28 - DDR Clock Disable Register */
+ u32 ddr1clkdr; /* 0x.0b20 - DDR1 Clock Disable Register */
+ u32 ddr2clkdr; /* 0x.0b24 - DDR2 Clock Disable Register */
+ u32 ddrclkdr; /* 0x.0b28 - DDR Clock Disable Register */
u8 resb2c[0xe00 - 0xb2c];
- __be32 clkocr; /* 0x.0e00 - Clock Out Select Register */
+ u32 clkocr; /* 0x.0e00 - Clock Out Select Register */
u8 rese04[0xe10 - 0xe04];
- __be32 ddrdllcr; /* 0x.0e10 - DDR DLL Control Register */
+ u32 ddrdllcr; /* 0x.0e10 - DDR DLL Control Register */
u8 rese14[0xe20 - 0xe14];
- __be32 lbcdllcr; /* 0x.0e20 - LBC DLL Control Register */
- __be32 cpfor; /* 0x.0e24 - L2 charge pump fuse override register */
+ u32 lbcdllcr; /* 0x.0e20 - LBC DLL Control Register */
+ u32 cpfor; /* 0x.0e24 - L2 charge pump fuse override
+ * register
+ */
u8 rese28[0xf04 - 0xe28];
- __be32 srds1cr0; /* 0x.0f04 - SerDes1 Control Register 0 */
- __be32 srds1cr1; /* 0x.0f08 - SerDes1 Control Register 0 */
+ u32 srds1cr0; /* 0x.0f04 - SerDes1 Control Register 0 */
+ u32 srds1cr1; /* 0x.0f08 - SerDes1 Control Register 0 */
u8 resf0c[0xf2c - 0xf0c];
- __be32 itcr; /* 0x.0f2c - Internal transaction control register */
+ u32 itcr; /* 0x.0f2c - Internal transaction control
+ * register
+ */
u8 resf30[0xf40 - 0xf30];
- __be32 srds2cr0; /* 0x.0f40 - SerDes2 Control Register 0 */
- __be32 srds2cr1; /* 0x.0f44 - SerDes2 Control Register 0 */
+ u32 srds2cr0; /* 0x.0f40 - SerDes2 Control Register 0 */
+ u32 srds2cr1; /* 0x.0f44 - SerDes2 Control Register 0 */
} __attribute__ ((packed));
+u32 fsl_guts_get_svr(void);
/* Alternate function signal multiplex control */
#define MPC85xx_PMUXCR_QE(x) (0x8000 >> (x))
--
2.1.0.27.g96db324
^ permalink raw reply related
* [v13, 4/8] powerpc/fsl: move mpc85xx.h to include/linux/fsl
From: Yangbo Lu @ 2016-10-28 3:32 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477625554-46700-1-git-send-email-yangbo.lu@nxp.com>
Move mpc85xx.h to include/linux/fsl and rename it to svr.h as a common
header file. This SVR numberspace is used on some ARM chips as well as
PPC, and even to check for a PPC SVR multi-arch drivers would otherwise
need to ifdef the header inclusion and all references to the SVR symbols.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Joerg Roedel <jroedel@suse.de>
[scottwood: update description]
Signed-off-by: Scott Wood <oss@buserror.net>
---
Changes for v2:
- None
Changes for v3:
- None
Changes for v4:
- None
Changes for v5:
- Changed to Move mpc85xx.h to include/linux/fsl/
- Adjusted '#include <linux/fsl/svr.h>' position in file
Changes for v6:
- None
Changes for v7:
- Added 'Acked-by: Wolfram Sang' for I2C part
- Also applied to arch/powerpc/kernel/cpu_setup_fsl_booke.S
Changes for v8:
- Added 'Acked-by: Stephen Boyd' for clk part
- Added 'Acked-by: Scott Wood'
- Added 'Acked-by: Joerg Roedel' for iommu part
Changes for v9:
- None
Changes for v10:
- None
Changes for v11:
- Updated description by Scott
Changes for v12:
- None
Changes for v13:
- None
---
arch/powerpc/kernel/cpu_setup_fsl_booke.S | 2 +-
arch/powerpc/sysdev/fsl_pci.c | 2 +-
drivers/clk/clk-qoriq.c | 3 +--
drivers/i2c/busses/i2c-mpc.c | 2 +-
drivers/iommu/fsl_pamu.c | 3 +--
drivers/net/ethernet/freescale/gianfar.c | 2 +-
arch/powerpc/include/asm/mpc85xx.h => include/linux/fsl/svr.h | 4 ++--
7 files changed, 8 insertions(+), 10 deletions(-)
rename arch/powerpc/include/asm/mpc85xx.h => include/linux/fsl/svr.h (97%)
diff --git a/arch/powerpc/kernel/cpu_setup_fsl_booke.S b/arch/powerpc/kernel/cpu_setup_fsl_booke.S
index 462aed9..2b0284e 100644
--- a/arch/powerpc/kernel/cpu_setup_fsl_booke.S
+++ b/arch/powerpc/kernel/cpu_setup_fsl_booke.S
@@ -13,13 +13,13 @@
*
*/
+#include <linux/fsl/svr.h>
#include <asm/page.h>
#include <asm/processor.h>
#include <asm/cputable.h>
#include <asm/ppc_asm.h>
#include <asm/mmu-book3e.h>
#include <asm/asm-offsets.h>
-#include <asm/mpc85xx.h>
_GLOBAL(__e500_icache_setup)
mfspr r0, SPRN_L1CSR1
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index d3a5974..cb0efea 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -22,6 +22,7 @@
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/fsl/edac.h>
+#include <linux/fsl/svr.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/memblock.h>
@@ -37,7 +38,6 @@
#include <asm/pci-bridge.h>
#include <asm/ppc-pci.h>
#include <asm/machdep.h>
-#include <asm/mpc85xx.h>
#include <asm/disassemble.h>
#include <asm/ppc-opcode.h>
#include <sysdev/fsl_soc.h>
diff --git a/drivers/clk/clk-qoriq.c b/drivers/clk/clk-qoriq.c
index 20b1055..dc778e8 100644
--- a/drivers/clk/clk-qoriq.c
+++ b/drivers/clk/clk-qoriq.c
@@ -13,6 +13,7 @@
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/fsl/guts.h>
+#include <linux/fsl/svr.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -1153,8 +1154,6 @@ static struct clk *clockgen_clk_get(struct of_phandle_args *clkspec, void *data)
}
#ifdef CONFIG_PPC
-#include <asm/mpc85xx.h>
-
static const u32 a4510_svrs[] __initconst = {
(SVR_P2040 << 8) | 0x10, /* P2040 1.0 */
(SVR_P2040 << 8) | 0x11, /* P2040 1.1 */
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index 565a49a..e791c51 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -27,9 +27,9 @@
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
+#include <linux/fsl/svr.h>
#include <asm/mpc52xx.h>
-#include <asm/mpc85xx.h>
#include <sysdev/fsl_soc.h>
#define DRV_NAME "mpc-i2c"
diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c
index a34355f..af8fb27 100644
--- a/drivers/iommu/fsl_pamu.c
+++ b/drivers/iommu/fsl_pamu.c
@@ -21,11 +21,10 @@
#include "fsl_pamu.h"
#include <linux/fsl/guts.h>
+#include <linux/fsl/svr.h>
#include <linux/interrupt.h>
#include <linux/genalloc.h>
-#include <asm/mpc85xx.h>
-
/* define indexes for each operation mapping scenario */
#define OMI_QMAN 0x00
#define OMI_FMAN 0x01
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 4b4f5bc..55be5ce 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -86,11 +86,11 @@
#include <linux/udp.h>
#include <linux/in.h>
#include <linux/net_tstamp.h>
+#include <linux/fsl/svr.h>
#include <asm/io.h>
#ifdef CONFIG_PPC
#include <asm/reg.h>
-#include <asm/mpc85xx.h>
#endif
#include <asm/irq.h>
#include <asm/uaccess.h>
diff --git a/arch/powerpc/include/asm/mpc85xx.h b/include/linux/fsl/svr.h
similarity index 97%
rename from arch/powerpc/include/asm/mpc85xx.h
rename to include/linux/fsl/svr.h
index 213f3a8..8d13836 100644
--- a/arch/powerpc/include/asm/mpc85xx.h
+++ b/include/linux/fsl/svr.h
@@ -9,8 +9,8 @@
* (at your option) any later version.
*/
-#ifndef __ASM_PPC_MPC85XX_H
-#define __ASM_PPC_MPC85XX_H
+#ifndef FSL_SVR_H
+#define FSL_SVR_H
#define SVR_REV(svr) ((svr) & 0xFF) /* SOC design resision */
#define SVR_MAJ(svr) (((svr) >> 4) & 0xF) /* Major revision field*/
--
2.1.0.27.g96db324
^ permalink raw reply related
* [v13, 3/8] dt: bindings: move guts devicetree doc out of powerpc directory
From: Yangbo Lu @ 2016-10-28 3:32 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477625554-46700-1-git-send-email-yangbo.lu@nxp.com>
Move guts devicetree doc to Documentation/devicetree/bindings/soc/fsl/
since it's used by not only PowerPC but also ARM. And add a specification
for 'little-endian' property.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Scott Wood <oss@buserror.net>
---
Changes for v4:
- Added this patch
Changes for v5:
- Modified the description for little-endian property
Changes for v6:
- None
Changes for v7:
- None
Changes for v8:
- Added 'Acked-by: Scott Wood'
- Added 'Acked-by: Rob Herring'
Changes for v9:
- None
Changes for v10:
- None
Changes for v11:
- None
Changes for v12:
- None
Changes for v13:
- None
---
Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt | 3 +++
1 file changed, 3 insertions(+)
rename Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/guts.txt b/Documentation/devicetree/bindings/soc/fsl/guts.txt
similarity index 91%
rename from Documentation/devicetree/bindings/powerpc/fsl/guts.txt
rename to Documentation/devicetree/bindings/soc/fsl/guts.txt
index b71b203..07adca9 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/guts.txt
+++ b/Documentation/devicetree/bindings/soc/fsl/guts.txt
@@ -25,6 +25,9 @@ Recommended properties:
- fsl,liodn-bits : Indicates the number of defined bits in the LIODN
registers, for those SOCs that have a PAMU device.
+ - little-endian : Indicates that the global utilities block is little
+ endian. The default is big endian.
+
Examples:
global-utilities at e0000 { /* global utilities block */
compatible = "fsl,mpc8548-guts";
--
2.1.0.27.g96db324
^ permalink raw reply related
* [v13, 2/8] ARM64: dts: ls2080a: add device configuration node
From: Yangbo Lu @ 2016-10-28 3:32 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477625554-46700-1-git-send-email-yangbo.lu@nxp.com>
Add the dts node for device configuration unit that provides
general purpose configuration and status for the device.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
---
Changes for v5:
- Added this patch
Changes for v6:
- None
Changes for v7:
- None
Changes for v8:
- Added 'Acked-by: Scott Wood'
Changes for v9:
- None
Changes for v10:
- None
Changes for v11:
- None
Changes for v12:
- None
Changes for v13:
- None
---
arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
index 337da90..c03b099 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
@@ -215,6 +215,12 @@
clocks = <&sysclk>;
};
+ dcfg: dcfg at 1e00000 {
+ compatible = "fsl,ls2080a-dcfg", "syscon";
+ reg = <0x0 0x1e00000 0x0 0x10000>;
+ little-endian;
+ };
+
serial0: serial at 21c0500 {
compatible = "fsl,ns16550", "ns16550a";
reg = <0x0 0x21c0500 0x0 0x100>;
--
2.1.0.27.g96db324
^ permalink raw reply related
* [v13, 1/8] dt: bindings: update Freescale DCFG compatible
From: Yangbo Lu @ 2016-10-28 3:32 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477625554-46700-1-git-send-email-yangbo.lu@nxp.com>
Update Freescale DCFG compatible with 'fsl,<chip>-dcfg' instead
of 'fsl,ls1021a-dcfg' to include more chips such as ls1021a,
ls1043a, and ls2080a.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Scott Wood <oss@buserror.net>
---
Changes for v8:
- Added this patch
Changes for v9:
- Added a list for the possible compatibles
Changes for v10:
- None
Changes for v11:
- Added 'Acked-by: Rob Herring'
- Updated commit message by Scott
Changes for v12:
- None
Changes for v13:
- None
---
Documentation/devicetree/bindings/arm/fsl.txt | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/arm/fsl.txt b/Documentation/devicetree/bindings/arm/fsl.txt
index dbbc095..713c1ae 100644
--- a/Documentation/devicetree/bindings/arm/fsl.txt
+++ b/Documentation/devicetree/bindings/arm/fsl.txt
@@ -119,7 +119,11 @@ Freescale DCFG
configuration and status for the device. Such as setting the secondary
core start address and release the secondary core from holdoff and startup.
Required properties:
- - compatible: should be "fsl,ls1021a-dcfg"
+ - compatible: should be "fsl,<chip>-dcfg"
+ Possible compatibles:
+ "fsl,ls1021a-dcfg"
+ "fsl,ls1043a-dcfg"
+ "fsl,ls2080a-dcfg"
- reg : should contain base address and length of DCFG memory-mapped registers
Example:
--
2.1.0.27.g96db324
^ permalink raw reply related
* [v13, 0/8] Fix eSDHC host version register bug
From: Yangbo Lu @ 2016-10-28 3:32 UTC (permalink / raw)
To: linux-arm-kernel
This patchset is used to fix a host version register bug in the T4240-R1.0-R2.0
eSDHC controller. To match the SoC version and revision, 10 previous version
patchsets had tried many methods but all of them were rejected by reviewers.
Such as
- dts compatible method
- syscon method
- ifdef PPC method
- GUTS driver getting SVR method
Anrd suggested a soc_device_match method in v10, and this is the only available
method left now. This v11 patchset introduces the soc_device_match interface in
soc driver.
The first six patches of Yangbo are to add the GUTS driver. This is used to
register a soc device which contain soc version and revision information.
The other two patches introduce the soc_device_match method in soc driver
and apply it on esdhc driver to fix this bug.
Arnd Bergmann (1):
base: soc: introduce soc_device_match() interface
Yangbo Lu (7):
dt: bindings: update Freescale DCFG compatible
ARM64: dts: ls2080a: add device configuration node
dt: bindings: move guts devicetree doc out of powerpc directory
powerpc/fsl: move mpc85xx.h to include/linux/fsl
soc: fsl: add GUTS driver for QorIQ platforms
MAINTAINERS: add entry for Freescale SoC drivers
mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0
Documentation/devicetree/bindings/arm/fsl.txt | 6 +-
.../bindings/{powerpc => soc}/fsl/guts.txt | 3 +
MAINTAINERS | 11 +-
arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi | 6 +
arch/powerpc/kernel/cpu_setup_fsl_booke.S | 2 +-
arch/powerpc/sysdev/fsl_pci.c | 2 +-
drivers/base/Kconfig | 1 +
drivers/base/soc.c | 66 ++++++
drivers/clk/clk-qoriq.c | 3 +-
drivers/i2c/busses/i2c-mpc.c | 2 +-
drivers/iommu/fsl_pamu.c | 3 +-
drivers/mmc/host/Kconfig | 1 +
drivers/mmc/host/sdhci-of-esdhc.c | 20 ++
drivers/net/ethernet/freescale/gianfar.c | 2 +-
drivers/soc/Kconfig | 3 +-
drivers/soc/fsl/Kconfig | 18 ++
drivers/soc/fsl/Makefile | 1 +
drivers/soc/fsl/guts.c | 236 +++++++++++++++++++++
include/linux/fsl/guts.h | 125 ++++++-----
.../asm/mpc85xx.h => include/linux/fsl/svr.h | 4 +-
include/linux/sys_soc.h | 3 +
21 files changed, 456 insertions(+), 62 deletions(-)
rename Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
create mode 100644 drivers/soc/fsl/Kconfig
create mode 100644 drivers/soc/fsl/guts.c
rename arch/powerpc/include/asm/mpc85xx.h => include/linux/fsl/svr.h (97%)
--
2.1.0.27.g96db324
^ permalink raw reply
* [RFC PATCH v2 4/8] arm64: compat: Add a 32-bit vDSO
From: Jisheng Zhang @ 2016-10-28 3:09 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <20161027163058.12156-5-kevin.brodsky@arm.com>
Dear Kevin,
On Thu, 27 Oct 2016 17:30:54 +0100 Kevin Brodsky wrote:
> Provide the files necessary for building a compat (AArch32) vDSO in
> kernel/vdso32.
>
> This is mostly an adaptation of the arm vDSO. The most significant
> change in vgettimeofday.c is the use of the arm64 vdso_data struct,
> allowing the vDSO data page to be shared between the 32 and 64-bit
> vDSOs.
>
> In addition to the time functions, sigreturn trampolines are also
> provided, aiming at replacing those in the vector page. To improve
> debugging, CFI and unwinding directives are used, based on glibc's
> implementation. Symbol offsets are made available to the kernel using
> the same method as the 64-bit vDSO.
>
> There is unfortunately an important caveat to all this: we cannot get
> away with hand-coding 32-bit instructions like in kernel/kuser32.S,
> this time we really need a 32-bit compiler. The compat vDSO Makefile
> relies on CROSS_COMPILE_ARM32 to provide a 32-bit compiler,
> appropriate logic will be added to the arm64 Makefile later on to
> ensure that an attempt to build the compat vDSO is made only if this
> variable has been set properly.
>
> Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
> ---
> arch/arm64/kernel/vdso32/Makefile | 121 +++++++++++++
> arch/arm64/kernel/vdso32/sigreturn.S | 86 +++++++++
> arch/arm64/kernel/vdso32/vdso.S | 32 ++++
> arch/arm64/kernel/vdso32/vdso.lds.S | 98 +++++++++++
> arch/arm64/kernel/vdso32/vgettimeofday.c | 294 +++++++++++++++++++++++++++++++
> 5 files changed, 631 insertions(+)
> create mode 100644 arch/arm64/kernel/vdso32/Makefile
> create mode 100644 arch/arm64/kernel/vdso32/sigreturn.S
> create mode 100644 arch/arm64/kernel/vdso32/vdso.S
> create mode 100644 arch/arm64/kernel/vdso32/vdso.lds.S
> create mode 100644 arch/arm64/kernel/vdso32/vgettimeofday.c
>
> diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
> new file mode 100644
> index 000000000000..38facc870f6e
> --- /dev/null
> +++ b/arch/arm64/kernel/vdso32/Makefile
> @@ -0,0 +1,121 @@
> +#
> +# Building a vDSO image for AArch32.
> +#
> +# Author: Kevin Brodsky <kevin.brodsky@arm.com>
> +# A mix between the arm64 and arm vDSO Makefiles.
> +
> +CC_ARM32 := $(CROSS_COMPILE_ARM32)gcc
> +
> +# Same as cc-ldoption, but using CC_ARM32 instead of CC
> +cc32-ldoption = $(call try-run,\
> + $(CC_ARM32) $(1) -nostdlib -x c /dev/null -o "$$TMP",$(1),$(2))
> +
> +# Borrow vdsomunge.c from the arm vDSO
> +munge := arch/arm/vdso/vdsomunge
> +hostprogs-y := $(srctree)/$(munge)
> +
> +c-obj-vdso := vgettimeofday.o
> +asm-obj-vdso := sigreturn.o
> +
> +# Build rules
> +targets := $(c-obj-vdso) $(asm-obj-vdso) vdso.so vdso.so.dbg vdso.so.raw
> +c-obj-vdso := $(addprefix $(obj)/, $(c-obj-vdso))
> +asm-obj-vdso := $(addprefix $(obj)/, $(asm-obj-vdso))
> +obj-vdso := $(c-obj-vdso) $(asm-obj-vdso)
> +
> +ccflags-y := -fPIC -fno-common -fno-builtin -fno-stack-protector
> +ccflags-y += -DDISABLE_BRANCH_PROFILING
> +
> +# Force -O2 to avoid libgcc dependencies
> +VDSO_CFLAGS := -march=armv8-a -O2
For completeness, bringing 32bit compiler need to check whether the 32bit
toolchain support some options. IIRC, armv8-a support isn't enabled until
gcc 4.8, so old toolchains such gcc-4.7 will complain:
error: unrecognized argument in option ?-march=armv8-a?
Thanks,
Jisheng
^ permalink raw reply
* [PATCH 1/2] of, numa: Add function to disable of_node_to_nid().
From: Leizhen (ThunderTown) @ 2016-10-28 1:50 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <5810E112.3070908@caviumnetworks.com>
On 2016/10/27 1:00, David Daney wrote:
> On 10/26/2016 06:43 AM, Robert Richter wrote:
>> On 25.10.16 14:31:00, David Daney wrote:
>>> From: David Daney <david.daney@cavium.com>
>>>
>>> On arm64 NUMA kernels we can pass "numa=off" on the command line to
>>> disable NUMA. A side effect of this is that kmalloc_node() calls to
>>> non-zero nodes will crash the system with an OOPS:
>>>
>>> [ 0.000000] [<fffffc00081bba84>] __alloc_pages_nodemask+0xa4/0xe68
>>> [ 0.000000] [<fffffc00082163a8>] new_slab+0xd0/0x57c
>>> [ 0.000000] [<fffffc000821879c>] ___slab_alloc+0x2e4/0x514
>>> [ 0.000000] [<fffffc000823882c>] __slab_alloc+0x48/0x58
>>> [ 0.000000] [<fffffc00082195a0>] __kmalloc_node+0xd0/0x2e0
>>> [ 0.000000] [<fffffc00081119b8>] __irq_domain_add+0x7c/0x164
>>> [ 0.000000] [<fffffc0008b75d30>] its_probe+0x784/0x81c
>>> [ 0.000000] [<fffffc0008b75e10>] its_init+0x48/0x1b0
>>> .
>>> .
>>> .
>>>
>>> This is caused by code like this in kernel/irq/irqdomain.c
>>>
>>> domain = kzalloc_node(sizeof(*domain) + (sizeof(unsigned int) * size),
>>> GFP_KERNEL, of_node_to_nid(of_node));
>>>
>>> When NUMA is disabled, the concept of a node is really undefined, so
>>> of_node_to_nid() should unconditionally return NUMA_NO_NODE.
>>>
>>> Add __of_force_no_numa() to allow of_node_to_nid() to be forced to
>>> return NUMA_NO_NODE.
>>>
>>> The follow on patch will call this new function from the arm64 numa
>>> code.
>>
>> Didn't that work before?
>
> I am fairly certain that it used to work.
>
>> numa=off just maps all mem to node 0.
>
> Yes, that is the current behavior.
It just deal with the cpu nodes, but I think currently you added "numa-node-id" in the peripheral device(maybe ITS).
>
>> If mem
>> allocation is requested for another node it should just fall back to a
>> node with mem (node 0 then).
>
> This is the root of the problem. The ITS code is allocating memory. It calls of_node_to_nid() to determine which node it resides on. The answer in the failing case is node-1. Since we have mapped all the memory to node-0 the __kmalloc_node(..., 1) call fails with the OOPS shown.
>
> It could be that __kmalloc_node() used to allocate memory on a node other than the requested node if the request couldn't be met. But in v4.8 and later it produces that OOPS.
>
> If you pass a node containing free memory or NUMA_NO_NODE to __kmalloc_node(), the allocation succeeds.
>
> When we first did these patches, I advocated removing the numa=off feature, and requiring people to install usable firmware on their systems. That was rejected on the grounds that not everybody has the ability to change their firmware and we would like to allow NUMA kernels to run on systems with defective firmware by supplying this command line parameter. Now that I have seen requests from the wild for this, I think it is a good idea to allow numa=off to be used to work around this bad firmware.
>
> The change in this patch set is fairly small, and seems to get the job done. An alternative would be to change __kmalloc_node() to ignore the node parameter if the request cannot be made, but I assume that there were good reasons to have the current behavior, so that would be a much more complicated change to make.
>
>
>
>> I suspect there is something wrong with
>> the page initialization, see:
>>
>> http://www.spinics.net/lists/arm-kernel/msg535191.html
>> https://bugzilla.redhat.com/show_bug.cgi?id=1387793
>>
>> What is the complete oops?
>>
>> So I think k*alloc_node() must be able to handle requests to
>> non-existing nodes. Otherwise your fix is incomplete, assume a failed
>> of_numa_init() causing a dummy init but still some devices reporting a
>> node.
>
> .
> .
> .
> EFI stub: Booting Linux Kernel...
> EFI stub: Using DTB from configuration table
> EFI stub: Exiting boot services and installing virtual address map...
> [ 0.000000] Booting Linux on physical CPU 0x0
> [ 0.000000] Linux version 4.8.0-rc8-dd (ddaney at localhost.localdomain) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC) ) #29 SMP Tue Sep 27 15:50:35 PDT 2016
> [ 0.000000] Boot CPU: AArch64 Processor [431f0a10]
> [ 0.000000] NUMA turned off
> [ 0.000000] earlycon: pl11 at MMIO 0x000087e024000000 (options '')
> [ 0.000000] bootconsole [pl11] enabled
> [ 0.000000] efi: Getting EFI parameters from FDT:
> [ 0.000000] efi: EFI v2.40 by Cavium Thunder cn88xx EFI jenkins_weekly_build_40-0-ga1f880f Sep 13 2016 17:05:35
> [ 0.000000] efi: ACPI=0xfffff000 ACPI 2.0=0xfffff014 SMBIOS 3.0=0x10ffafcf000
> [ 0.000000] cma: Reserved 512 MiB at 0x00000000c0000000
> [ 0.000000] NUMA disabled
> [ 0.000000] NUMA: Faking a node at [mem 0x0000000000000000-0x0000010fffffffff]
> [ 0.000000] NUMA: Adding memblock [0x1400000 - 0xfffdffff] on node 0
> [ 0.000000] NUMA: Adding memblock [0xfffe0000 - 0xffffffff] on node 0
> [ 0.000000] NUMA: Adding memblock [0x100000000 - 0xfffffffff] on node 0
> [ 0.000000] NUMA: Adding memblock [0x10000400000 - 0x10ffa38ffff] on node 0
> [ 0.000000] NUMA: Adding memblock [0x10ffa390000 - 0x10ffa41ffff] on node 0
> [ 0.000000] NUMA: Adding memblock [0x10ffa420000 - 0x10ffaeaffff] on node 0
> [ 0.000000] NUMA: Adding memblock [0x10ffaeb0000 - 0x10ffaffffff] on node 0
> [ 0.000000] NUMA: Adding memblock [0x10ffb000000 - 0x10ffffaffff] on node 0
> [ 0.000000] NUMA: Adding memblock [0x10ffffb0000 - 0x10fffffffff] on node 0
> [ 0.000000] NUMA: Initmem setup node 0 [mem 0x01400000-0x10fffffffff]
> [ 0.000000] NUMA: NODE_DATA [mem 0x10ffffae480-0x10ffffaff7f]
> [ 0.000000] Zone ranges:
> [ 0.000000] DMA [mem 0x0000000001400000-0x00000000ffffffff]
> [ 0.000000] Normal [mem 0x0000000100000000-0x0000010fffffffff]
> [ 0.000000] Movable zone start for each node
> [ 0.000000] Early memory node ranges
> [ 0.000000] node 0: [mem 0x0000000001400000-0x00000000fffdffff]
> [ 0.000000] node 0: [mem 0x00000000fffe0000-0x00000000ffffffff]
> [ 0.000000] node 0: [mem 0x0000000100000000-0x0000000fffffffff]
> [ 0.000000] node 0: [mem 0x0000010000400000-0x0000010ffa38ffff]
> [ 0.000000] node 0: [mem 0x0000010ffa390000-0x0000010ffa41ffff]
> [ 0.000000] node 0: [mem 0x0000010ffa420000-0x0000010ffaeaffff]
> [ 0.000000] node 0: [mem 0x0000010ffaeb0000-0x0000010ffaffffff]
> [ 0.000000] node 0: [mem 0x0000010ffb000000-0x0000010ffffaffff]
> [ 0.000000] node 0: [mem 0x0000010ffffb0000-0x0000010fffffffff]
> [ 0.000000] Initmem setup node 0 [mem 0x0000000001400000-0x0000010fffffffff]
> [ 0.000000] psci: probing for conduit method from DT.
> [ 0.000000] psci: PSCIv0.2 detected in firmware.
> [ 0.000000] psci: Using standard PSCI v0.2 function IDs
> [ 0.000000] psci: Trusted OS resident on physical CPU 0x0
> [ 0.000000] percpu: Embedded 3 pages/cpu @ffffff0ff6900000 s116736 r8192 d71680 u196608
> [ 0.000000] Detected VIPT I-cache on CPU0
> [ 0.000000] CPU features: enabling workaround for Cavium erratum 27456
> [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 2094720
> [ 0.000000] Policy zone: Normal
> [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-4.8.0-rc8-dd root=/dev/mapper/rhel-root ro crashkernel=auto rd.lvm.lv=rhel/root rd.lvm.lv=rhel/swap LANG=en_US.UTF-8 numa=off console=ttyAMA0,115200n8 earlycon=pl011,0x87e024000000
> [ 0.000000] log_buf_len individual max cpu contribution: 4096 bytes
> [ 0.000000] log_buf_len total cpu_extra contributions: 389120 bytes
> [ 0.000000] log_buf_len min size: 524288 bytes
> [ 0.000000] log_buf_len: 1048576 bytes
> [ 0.000000] early log buf free: 519176(99%)
> [ 0.000000] PID hash table entries: 4096 (order: -1, 32768 bytes)
> [ 0.000000] software IO TLB [mem 0xfbfd0000-0xfffd0000] (64MB) mapped at [fffffe00fbfd0000-fffffe00fffcffff]
> [ 0.000000] Memory: 133391936K/134193152K available (7356K kernel code, 1359K rwdata, 3392K rodata, 1216K init, 6799K bss, 276928K reserved, 524288K cma-reserved)
> [ 0.000000] Virtual kernel memory layout:
> [ 0.000000] modules : 0xfffffc0000000000 - 0xfffffc0008000000 ( 128 MB)
> [ 0.000000] vmalloc : 0xfffffc0008000000 - 0xfffffdff5fff0000 ( 2045 GB)
> [ 0.000000] .text : 0xfffffc0008080000 - 0xfffffc00087b0000 ( 7360 KB)
> [ 0.000000] .rodata : 0xfffffc00087b0000 - 0xfffffc0008b10000 ( 3456 KB)
> [ 0.000000] .init : 0xfffffc0008b10000 - 0xfffffc0008c40000 ( 1216 KB)
> [ 0.000000] .data : 0xfffffc0008c40000 - 0xfffffc0008d93e00 ( 1360 KB)
> [ 0.000000] .bss : 0xfffffc0008d93e00 - 0xfffffc0009437d48 ( 6800 KB)
> [ 0.000000] fixed : 0xfffffdff7e7d0000 - 0xfffffdff7ec00000 ( 4288 KB)
> [ 0.000000] PCI I/O : 0xfffffdff7ee00000 - 0xfffffdff7fe00000 ( 16 MB)
> [ 0.000000] vmemmap : 0xfffffdff80000000 - 0xfffffe0000000000 ( 2 GB maximum)
> [ 0.000000] 0xfffffdff80005000 - 0xfffffdffc4000000 ( 1087 MB actual)
> [ 0.000000] memory : 0xfffffe0001400000 - 0xffffff1000000000 (1114092 MB)
> [ 0.000000] SLUB: HWalign=128, Order=0-3, MinObjects=0, CPUs=96, Nodes=1
> [ 0.000000] Hierarchical RCU implementation.
> [ 0.000000] Build-time adjustment of leaf fanout to 64.
> [ 0.000000] RCU restricting CPUs from NR_CPUS=4096 to nr_cpu_ids=96.
> [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=96
> [ 0.000000] NR_IRQS:64 nr_irqs:64 0
> [ 0.000000] GICv3: GIC: Using split EOI/Deactivate mode
> [ 0.000000] ITS: /interrupt-controller at 801000000000/gic-its at 801000020000
> [ 0.000000] ITS at 0x0000801000020000: allocated 2097152 Devices @10001000000 (flat, esz 8, psz 64K, shr 1)
> [ 0.000000] ITS: /interrupt-controller at 801000000000/gic-its at 901000020000
> [ 0.000000] ITS at 0x0000901000020000: allocated 2097152 Devices @10002000000 (flat, esz 8, psz 64K, shr 1)
> [ 0.000000] Unable to handle kernel NULL pointer dereference at virtual address 00001680
> [ 0.000000] pgd = fffffc0009470000
> [ 0.000000] [00001680] *pgd=0000010ffff90003, *pud=0000010ffff90003, *pmd=0000010ffff90003, *pte=0000000000000000
> [ 0.000000] Internal error: Oops: 96000006 [#1] SMP
> [ 0.000000] Modules linked in:
> [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.8.0-rc8-dd #29
> [ 0.000000] Hardware name: Cavium ThunderX CN88XX board (DT)
> [ 0.000000] task: fffffc0008c71c80 task.stack: fffffc0008c40000
> [ 0.000000] PC is at __alloc_pages_nodemask+0xa4/0xe68
> [ 0.000000] LR is at __alloc_pages_nodemask+0x38/0xe68
> [ 0.000000] pc : [<fffffc00081c8950>] lr : [<fffffc00081c88e4>] pstate: 600000c5
> [ 0.000000] sp : fffffc0008c43880
> [ 0.000000] x29: fffffc0008c43880 x28: ffffff000041fc00
> [ 0.000000] x27: 0000000000201200 x26: 0000000000000000
> [ 0.000000] x25: 0000000000000001 x24: 0000000000001680
> [ 0.000000] x23: 0000000000201200 x22: fffffc0008c439c8
> [ 0.000000] x21: fffffc0008c63000 x20: 0000000000201200
> [ 0.000000] x19: 0000000000000000 x18: 0000000000000070
> [ 0.000000] x17: 0000000000000008 x16: 0000000000000000
> [ 0.000000] x15: 0000000000000000 x14: 2820303030303030
> [ 0.000000] x13: 3230303031402073 x12: 6563697665442032
> [ 0.000000] x11: 0000000000000020 x10: fffffc0009334000
> [ 0.000000] x9 : 0000000001bfff3f x8 : 7f7f7f7f7f7f7f7f
> [ 0.000000] x7 : 0000000001210111 x6 : fffffdffc00010a0
> [ 0.000000] x5 : 0000000000000000 x4 : 0000000000000000
> [ 0.000000] x3 : 0000000000000000 x2 : 0000000000000000
> [ 0.000000] x1 : 0000000000000000 x0 : fffffc0008c63bb0
> [ 0.000000]
> [ 0.000000] Process swapper/0 (pid: 0, stack limit = 0xfffffc0008c40020)
> [ 0.000000] Stack: (0xfffffc0008c43880 to 0xfffffc0008c44000)
> [ 0.000000] 3880: fffffc0008c439f0 fffffc000821fa70 ffffff000041fc00 0000000000000200
> [ 0.000000] 38a0: fffffc0008115374 0000000000000000 0000000000000000 0000000000000001
> [ 0.000000] 38c0: 0000000000000000 0000000000000000 0000000000201200 ffffff000041fc00
> [ 0.000000] 38e0: fffffc0008c43960 fffffc000810bc20 fffffc0008c43960 fffffc0008c43960
> [ 0.000000] 3900: fffffc0008c43930 00000000ffffffd0 fffffc0008c43960 fffffc0008c43960
> [ 0.000000] 3920: fffffc0008c43930 00000000ffffffd0 fffffc0008c43970 fffffc0008221658
> [ 0.000000] 3940: 7f7f7f7f7f7f7f7f 0000000000000002 0101010101010101 0000000000000020
> [ 0.000000] 3960: fffffc0008c43a70 fffffc0008221c04 0000000000000001 00000000024080c0
> [ 0.000000] 3980: fffffc0008115374 fffffc0008bf8648 0000000000001000 0000000000000000
> [ 0.000000] 39a0: ffffff000041fc00 0000000000000001 ffffff0ff691e840 ffffff000041fc00
> [ 0.000000] 39c0: ffffff0ff691e840 0000000000001680 0000000000000000 0000000000000000
> [ 0.000000] 39e0: 0000000100000000 0000000000000000 fffffc0008c43a70 fffffc0008221e24
> [ 0.000000] 3a00: 0000000000000001 00000000024080c0 fffffc0008115374 fffffc0008bf8648
> [ 0.000000] 3a20: 0000000000001000 0000000000000000 0000000000000000 0000000000000001
> [ 0.000000] 3a40: ffffff0ff691e840 ffffff000041fc00 fffffc000928a1e8 024080c000000006
> [ 0.000000] 3a60: fffffc0008ca6a38 000000000000005c fffffc0008c43b90 fffffc0008239498
> [ 0.000000] 3a80: 00000000000000c0 ffffff000041fc00 ffffff0000424f00 0000000000000070
> [ 0.000000] 3aa0: 0000000000000001 fffffc0008115374 ffffff000041fc00 fffffc00093f1000
> [ 0.000000] 3ac0: ffffff0002000000 ffffff0000433000 fffffc0008c43bd0 fffffc0008a308f0
> [ 0.000000] 3ae0: 0000000000010000 0000020000000000 0000000000000000 0000000000000001
> [ 0.000000] 3b00: fffffc0008c43b30 fffffc000861f07c fffffc000941efc0 00000000000000c0
> [ 0.000000] 3b20: ffffff0ffff44e60 00000000000000c0 fffffc0008c43b70 fffffc000861f234
> [ 0.000000] 3b40: ffffff0ffff44e60 0000000000000004 ffffff0ffff44e60 fffffc0008c43c70
> [ 0.000000] 3b60: 0000000000000000 fffffc0008a74460 fffffc0008c43ba0 fffffc000861f3fc
> [ 0.000000] 3b80: fffffc0008c43ba0 fffffc00083ca55c fffffc0008c43bd0 fffffc0008222c20
> [ 0.000000] 3ba0: ffffff000041fc00 00000000024080c0 ffffff0ff691e840 fffffc0008115374
> [ 0.000000] 3bc0: 0000000000000001 00000000024080c0 fffffc0008c43c20 fffffc0008115374
> [ 0.000000] 3be0: 0000000000000070 ffffff0ffff44e80 ffffff0ffff44e60 0000000000000000
> [ 0.000000] 3c00: fffffc0008849a18 ffffffffffffffff 0000000000000000 ffffff0000433000
> [ 0.000000] 3c20: fffffc0008c43c80 fffffc0008b461dc ffffff0000424e80 2800000000000000
> [ 0.000000] 3c40: 0000000000010000 0000020000000000 0000000000000000 0000000000000400
> [ 0.000000] 3c60: 0000000000000400 ffffff00004330f8 0000000000000001 ffffff0ffffabe00
> [ 0.000000] 3c80: fffffc0008c43dc0 fffffc0008b462bc fffffc0008d33488 fffffc0008d33000
> [ 0.000000] 3ca0: ffffff0ffff44e60 fffffc0008c6c840 ffffff0000424b00 ffffff0000424880
> [ 0.000000] 3cc0: 0000000000000002 0000000000000000 0000000001bae074 0000000001f1001c
> [ 0.000000] 3ce0: 0000000000000000 fffffc0008a30890 ffffff0000424b00 fffffc0008849940
> [ 0.000000] 3d00: ffffff0000433020 fffffc0008a308f0 ffffff0000433008 ffffff0ffff44e60
> [ 0.000000] 3d20: fffffc000ac00000 0000000000000008 0000000000000001 8107000000000000
> [ 0.000000] 3d40: 00000000000000c0 0000000001000000 00000008fff44e60 0000010002000000
> [ 0.000000] 3d60: 0000000000000100 81070000000000ff fffffc0008c43dc0 0000000008b462cc
> [ 0.000000] 3d80: 0000901000020000 000090100021ffff ffffff0ffff44f08 0000000000000200
> [ 0.000000] 3da0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [ 0.000000] 3dc0: fffffc0008c43e10 fffffc0008b4543c fffffc0008c6c828 fffffc0008d32000
> [ 0.000000] 3de0: fffffc0008c6c000 ffffff0ffff44470 fffffc0008849000 ffffff0000424880
> [ 0.000000] 3e00: fffffc0008c43e10 fffffc0008b45420 fffffc0008c43e60 fffffc0008b456bc
> [ 0.000000] 3e20: 0000000000000002 0000000000000003 0000000000000030 ffffff0000424880
> [ 0.000000] 3e40: ffffff0ffff44470 0000000000000000 0000000000000018 fffffc0008000000
> [ 0.000000] 3e60: fffffc0008c43f00 fffffc0008b5aec8 ffffff0000424700 fffffc0008c43f60
> [ 0.000000] 3e80: fffffc0008c43f60 0000000000000000 fffffc0008c43f70 fffffc0008d92000
> [ 0.000000] 3ea0: fffffc0008a734e0 fffffc0008a734b8 fffffc0008c43f00 0000000208b5ae3c
> [ 0.000000] 3ec0: 0000000000000000 00009010805fffff ffffff0ffff44518 0000000000000200
> [ 0.000000] 3ee0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [ 0.000000] 3f00: fffffc0008c43f80 fffffc0008b43f9c fffffc0008c60000 fffffc0008b66628
> [ 0.000000] 3f20: fffffc0008b66628 fffffc0008dc0000 fffffc0008c60000 ffffff0ffffac580
> [ 0.000000] 3f40: 0000000002840000 0000000002870000 0000000000000020 0000000000000000
> [ 0.000000] 3f60: fffffc0008c43f60 fffffc0008c43f60 fffffc0008c43f70 fffffc0008c43f70
> [ 0.000000] 3f80: fffffc0008c43f90 fffffc0008b12d60 fffffc0008c43fa0 fffffc0008b10a3c
> [ 0.000000] 3fa0: 0000000000000000 fffffc0008b101c4 0000010ff7a35218 0000000000000e12
> [ 0.000000] 3fc0: 0000000021200000 0000000030d00980 0000000000000000 0000000001400000
> [ 0.000000] 3fe0: 0000000000000000 fffffc0008b66628 0000000000000000 0000000000000000
> [ 0.000000] Call trace:
> [ 0.000000] Exception stack(0xfffffc0008c436b0 to 0xfffffc0008c437e0)
> [ 0.000000] 36a0: 0000000000000000 0000040000000000
> [ 0.000000] 36c0: fffffc0008c43880 fffffc00081c8950 ffffff0ffffaf180 0000000000000003
> [ 0.000000] 36e0: fffffc0008c63000 00000000ffffffff 0000000000000001 0000000000000000
> [ 0.000000] 3700: fffffc0008c43720 fffffc00081e25cc 0000000000000000 0000000001bfff3f
> [ 0.000000] 3720: fffffc0008c43750 fffffc00081c8454 0000000000000012 0000000000000000
> [ 0.000000] 3740: fffffffffffffff8 0000000000000012 fffffc0008c63bb0 0000000000000000
> [ 0.000000] 3760: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [ 0.000000] 3780: fffffdffc00010a0 0000000001210111 7f7f7f7f7f7f7f7f 0000000001bfff3f
> [ 0.000000] 37a0: fffffc0009334000 0000000000000020 6563697665442032 3230303031402073
> [ 0.000000] 37c0: 2820303030303030 0000000000000000 0000000000000000 0000000000000008
> [ 0.000000] [<fffffc00081c8950>] __alloc_pages_nodemask+0xa4/0xe68
> [ 0.000000] [<fffffc000821fa70>] new_slab+0xd0/0x564
> [ 0.000000] [<fffffc0008221e24>] ___slab_alloc+0x2e4/0x514
> [ 0.000000] [<fffffc0008239498>] __slab_alloc+0x48/0x58
> [ 0.000000] [<fffffc0008222c20>] __kmalloc_node+0xd0/0x2dc
> [ 0.000000] [<fffffc0008115374>] __irq_domain_add+0x7c/0x164
> [ 0.000000] [<fffffc0008b461dc>] its_probe+0x784/0x81c
> [ 0.000000] [<fffffc0008b462bc>] its_init+0x48/0x1b0
> [ 0.000000] [<fffffc0008b4543c>] gic_init_bases+0x228/0x360
> [ 0.000000] [<fffffc0008b456bc>] gic_of_init+0x148/0x1cc
> [ 0.000000] [<fffffc0008b5aec8>] of_irq_init+0x184/0x298
> [ 0.000000] [<fffffc0008b43f9c>] irqchip_init+0x14/0x38
> [ 0.000000] [<fffffc0008b12d60>] init_IRQ+0xc/0x30
> [ 0.000000] [<fffffc0008b10a3c>] start_kernel+0x240/0x3b8
> [ 0.000000] [<fffffc0008b101c4>] __primary_switched+0x30/0x6c
> [ 0.000000] Code: 912ec2a0 b9403809 0a0902fb 37b007db (f9400300)
> [ 0.000000] ---[ end trace 0000000000000000 ]---
> [ 0.000000] Kernel panic - not syncing: Fatal exception
> [ 0.000000] ---[ end Kernel panic - not syncing: Fatal exception
>
>
> Same thing on v4.8.x and v4.9-rc?
>
>
>
>
>>
>> -Robert
>>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
> .
>
^ permalink raw reply
* [PATCH v2 1/2] arm64/numa: fix pcpu_cpu_distance() to get correct CPU proximity
From: Hanjun Guo @ 2016-10-28 1:50 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477037636-10077-1-git-send-email-guohanjun@huawei.com>
+Cc Robert, David.
On 2016/10/21 16:13, Hanjun Guo wrote:
> From: Yisheng Xie <xieyisheng1@huawei.com>
>
> The pcpu_build_alloc_info() function group CPUs according to their
> proximity, by call callback function @cpu_distance_fn from different
> ARCHs.
>
> For arm64 the callback of @cpu_distance_fn is
> pcpu_cpu_distance(from, to)
> -> node_distance(from, to)
> The @from and @to for function node_distance() should be nid.
>
> However, pcpu_cpu_distance() in arch/arm64/mm/numa.c just past the
> cpu id for @from and @to, and didn't convert to numa node id.
>
> For this incorrect cpu proximity get from ARCH, it may cause each CPU
> in one group and make group_cnt out of bound:
>
> setup_per_cpu_areas()
> pcpu_embed_first_chunk()
> pcpu_build_alloc_info()
> in pcpu_build_alloc_info, since cpu_distance_fn will return
> REMOTE_DISTANCE if we pass cpu ids (0,1,2...), so
> cpu_distance_fn(cpu, tcpu) > LOCAL_DISTANCE will wrongly be ture.
>
> This may results in triggering the BUG_ON(unit != nr_units) later:
>
> [ 0.000000] kernel BUG at mm/percpu.c:1916!
> [ 0.000000] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
> [ 0.000000] Modules linked in:
> [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.9.0-rc1-00003-g14155ca-dirty #26
> [ 0.000000] Hardware name: Hisilicon Hi1616 Evaluation Board (DT)
> [ 0.000000] task: ffff000008d6e900 task.stack: ffff000008d60000
> [ 0.000000] PC is at pcpu_embed_first_chunk+0x420/0x704
> [ 0.000000] LR is at pcpu_embed_first_chunk+0x3bc/0x704
> [ 0.000000] pc : [<ffff000008c754f4>] lr : [<ffff000008c75490>] pstate: 800000c5
> [ 0.000000] sp : ffff000008d63eb0
> [ 0.000000] x29: ffff000008d63eb0 [ 0.000000] x28: 0000000000000000
> [ 0.000000] x27: 0000000000000040 [ 0.000000] x26: ffff8413fbfcef00
> [ 0.000000] x25: 0000000000000042 [ 0.000000] x24: 0000000000000042
> [ 0.000000] x23: 0000000000001000 [ 0.000000] x22: 0000000000000046
> [ 0.000000] x21: 0000000000000001 [ 0.000000] x20: ffff000008cb3bc8
> [ 0.000000] x19: ffff8413fbfcf570 [ 0.000000] x18: 0000000000000000
> [ 0.000000] x17: ffff000008e49ae0 [ 0.000000] x16: 0000000000000003
> [ 0.000000] x15: 000000000000001e [ 0.000000] x14: 0000000000000004
> [ 0.000000] x13: 0000000000000000 [ 0.000000] x12: 000000000000006f
> [ 0.000000] x11: 00000413fbffff00 [ 0.000000] x10: 0000000000000004
> [ 0.000000] x9 : 0000000000000000 [ 0.000000] x8 : 0000000000000001
> [ 0.000000] x7 : ffff8413fbfcf63c [ 0.000000] x6 : ffff000008d65d28
> [ 0.000000] x5 : ffff000008d65e50 [ 0.000000] x4 : 0000000000000000
> [ 0.000000] x3 : ffff000008cb3cc8 [ 0.000000] x2 : 0000000000000040
> [ 0.000000] x1 : 0000000000000040 [ 0.000000] x0 : 0000000000000000
> [...]
> [ 0.000000] Call trace:
> [ 0.000000] Exception stack(0xffff000008d63ce0 to 0xffff000008d63e10)
> [ 0.000000] 3ce0: ffff8413fbfcf570 0001000000000000 ffff000008d63eb0 ffff000008c754f4
> [ 0.000000] 3d00: ffff000008d63d50 ffff0000081af210 00000413fbfff010 0000000000001000
> [ 0.000000] 3d20: ffff000008d63d50 ffff0000081af220 00000413fbfff010 0000000000001000
> [ 0.000000] 3d40: 00000413fbfcef00 0000000000000004 ffff000008d63db0 ffff0000081af390
> [ 0.000000] 3d60: 00000413fbfcef00 0000000000001000 0000000000000000 0000000000001000
> [ 0.000000] 3d80: 0000000000000000 0000000000000040 0000000000000040 ffff000008cb3cc8
> [ 0.000000] 3da0: 0000000000000000 ffff000008d65e50 ffff000008d65d28 ffff8413fbfcf63c
> [ 0.000000] 3dc0: 0000000000000001 0000000000000000 0000000000000004 00000413fbffff00
> [ 0.000000] 3de0: 000000000000006f 0000000000000000 0000000000000004 000000000000001e
> [ 0.000000] 3e00: 0000000000000003 ffff000008e49ae0
> [ 0.000000] [<ffff000008c754f4>] pcpu_embed_first_chunk+0x420/0x704
> [ 0.000000] [<ffff000008c6658c>] setup_per_cpu_areas+0x38/0xc8
> [ 0.000000] [<ffff000008c608d8>] start_kernel+0x10c/0x390
> [ 0.000000] [<ffff000008c601d8>] __primary_switched+0x5c/0x64
> [ 0.000000] Code: b8018660 17ffffd7 6b16037f 54000080 (d4210000)
> [ 0.000000] ---[ end trace 0000000000000000 ]---
> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
>
> Fix by getting cpu's node id with early_cpu_to_node() then pass it
> to node_distance() as the original intention.
>
> Fixes: 7af3a0a99252 ("arm64/numa: support HAVE_SETUP_PER_CPU_AREA")
> Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Cc: Will Deacon <will.deacon@arm.com>
> Cc: Zhen Lei <thunder.leizhen@huawei.com>
> ---
> arch/arm64/mm/numa.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
> index 778a985..9a71d06 100644
> --- a/arch/arm64/mm/numa.c
> +++ b/arch/arm64/mm/numa.c
> @@ -147,7 +147,7 @@ static int __init early_cpu_to_node(int cpu)
>
> static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
> {
> - return node_distance(from, to);
> + return node_distance(early_cpu_to_node(from), early_cpu_to_node(to));
> }
>
> static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size,
>
^ permalink raw reply
* [PATCH v3 2/2] clk: imx: improve precision of AV PLL to 1 Hz
From: Stephen Boyd @ 2016-10-28 1:41 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <66f5967187f915fe7039f4dbfb77db88a2423094.1476267249.git.emil@limesaudio.com>
On 10/12, Emil Lundmark wrote:
> The audio and video PLLs are designed to have a precision of 1 Hz if some
> conditions are met. The current implementation only allows a precision that
> depends on the rate of the parent clock. E.g., if the parent clock is 24
> MHz, the precision will be 24 Hz; or more generally the precision will be
>
> p / 10^6 Hz
>
> where p is the parent clock rate. This comes down to how the register
> values for the PLL's fractional loop divider are chosen.
>
> The clock rate calculation for the PLL is
>
> PLL output frequency = Fref * (DIV_SELECT + NUM / DENOM)
>
> or with a shorter notation
>
> r = p * (d + a / b)
>
> In addition to all variables being integers, we also have the following
> conditions:
>
> 27 <= d <= 54
>
> -2^29 <= a <= 2^29-1
> 0 < b <= 2^30-1
> |a| < b
>
> Here, d, a and b are register values for the fractional loop divider. We
> want to chose d, a and b such that f(p, r) = p, i.e. f is our round_rate
> function. Currently, d and b are chosen as
>
> d = r / p
> b = 10^6
>
> hence we get the poor precision. And a is defined in terms of r, d, p and
> b:
>
> a = (r - d * p) * b / p
>
> I propose that if p <= 2^30-1 (i.e., the max value for b), we chose b as
>
> b = p
>
> We can do this since
>
> |a| < b
>
> |(r - d * p) * b / p| < b
>
> |r - d * p| < p
>
> Which have two solutions, one of them is when p < 0, so we can skip that
> one. The other is when p > 0 and
>
> p * (d - 1) < r < p * (d + 1)
>
> Substitute d = r / p:
>
> (r - p) < r < (r + p) <=> p > 0
>
> So, as long as p > 0, we can chose b = p. This is a good choise for b since
>
> a = (r - d * p) * b / p
> = (r - d * p) * p / p
> = r - d * p
>
> r = p * (d + a / b)
> = p * d + p * a / b
> = p * d + p * a / p
> = p * d + a
>
> and if d = r / p:
>
> a = r - d * p
> = r - r / p * p
> = 0
>
> r = p * d + a
> = p * d + 0
> = p * r / p
> = r
>
> I reckon this is the intention by the design of the clock rate formula.
>
> Signed-off-by: Emil Lundmark <emil@limesaudio.com>
> ---
Applied to clk-next
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply
* [PATCH v3 1/2] clk: imx: fix integer overflow in AV PLL round rate
From: Stephen Boyd @ 2016-10-28 1:41 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <4d2e3a91dfb74209735c940b51d7efc9ba2ed69b.1476267249.git.emil@limesaudio.com>
On 10/12, Emil Lundmark wrote:
> Since 'parent_rate * mfn' may overflow 32 bits, the result should be
> stored using 64 bits.
>
> The problem was discovered when trying to set the rate of the audio PLL
> (pll4_post_div) on an i.MX6Q. The desired rate was 196.608 MHz, but
> the actual rate returned was 192.000570 MHz. The round rate function should
> have been able to return 196.608 MHz, i.e., the desired rate.
>
> Fixes: ba7f4f557eb6 ("clk: imx: correct AV PLL rate formula")
> Cc: Anson Huang <b20788@freescale.com>
> Signed-off-by: Emil Lundmark <emil@limesaudio.com>
> ---
Applied to clk-next
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply
* [PATCH v3 3/3] clk: stm32f469: Add QSPI clock
From: Stephen Boyd @ 2016-10-28 1:39 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477041810-12313-4-git-send-email-gabriel.fernandez@st.com>
On 10/21, gabriel.fernandez at st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>
> This patch adds the QSPI clock for stm32f469 discovery board.
> The gate mapping is a little bit different from stm32f429 soc.
>
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
> ---
Applied to clk-next + added Rob's ack from v2.
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply
* [PATCH v3 2/3] clk: stm32f4: Add RTC clock
From: Stephen Boyd @ 2016-10-28 1:38 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477041810-12313-3-git-send-email-gabriel.fernandez@st.com>
On 10/21, gabriel.fernandez at st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>
> This patch introduces the support of the RTC clock.
> RTC clock can have 3 sources: lsi, lse and hse_rtc.
>
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
> ---
Applied to clk-next
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply
* [PATCH v3 1/3] clk: stm32f4: Add LSI & LSE clocks
From: Stephen Boyd @ 2016-10-28 1:38 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477041810-12313-2-git-send-email-gabriel.fernandez@st.com>
On 10/21, gabriel.fernandez at st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>
> This patch introduces the support of the LSI & LSE clocks.
> The clock drivers needs to disable the power domain write protection
> using syscon/regmap to enable these clocks.
>
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
> ---
Applied to clk-next +
diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c
index c2661e28eeda..5eb05dbf59b8 100644
--- a/drivers/clk/clk-stm32f4.c
+++ b/drivers/clk/clk-stm32f4.c
@@ -224,7 +224,7 @@ static const u64 stm32f46xx_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull,
0x0000000000000003ull,
0x0c777f33f6fec9ffull };
-const u64 *stm32f4_gate_map;
+static const u64 *stm32f4_gate_map;
static struct clk_hw **clks;
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related
* [PATCH v14 1/4] clk: mediatek: Add MT2701 clock support
From: Stephen Boyd @ 2016-10-28 1:17 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1477020742-13889-2-git-send-email-erin.lo@mediatek.com>
On 10/21, Erin Lo wrote:
> diff --git a/drivers/clk/mediatek/clk-mt2701-bdp.c b/drivers/clk/mediatek/clk-mt2701-bdp.c
> new file mode 100644
> index 0000000..dbf6ab2
> --- /dev/null
> +++ b/drivers/clk/mediatek/clk-mt2701-bdp.c
> @@ -0,0 +1,148 @@
> +
> +static int mtk_bdpsys_init(struct platform_device *pdev)
> +{
> + struct clk_onecell_data *clk_data;
> + int r;
> + struct device_node *node = pdev->dev.of_node;
> +
> + clk_data = mtk_alloc_clk_data(CLK_BDP_NR);
> +
> + mtk_clk_register_gates(node, bdp_clks, ARRAY_SIZE(bdp_clks),
> + clk_data);
> +
> + r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> +
> + return r;
> +}
> +
> +static const struct of_device_id of_match_clk_mt2701_bdp[] = {
> + { .compatible = "mediatek,mt2701-bdpsys", },
> + {}
> +};
> +
> +static int clk_mt2701_bdp_probe(struct platform_device *pdev)
> +{
> + int r;
> +
> + r = mtk_bdpsys_init(pdev);
Why not just put the contents of that function here? I don't see
the point of this.
> + if (r) {
> + dev_err(&pdev->dev,
> + "could not register clock provider: %s: %d\n",
> + pdev->name, r);
> + }
> +
> + return r;
> +}
> +
> +static struct platform_driver clk_mt2701_bdp_drv = {
> + .probe = clk_mt2701_bdp_probe,
> + .driver = {
> + .name = "clk-mt2701-bdp",
> + .of_match_table = of_match_clk_mt2701_bdp,
> + },
> +};
> +
> +builtin_platform_driver(clk_mt2701_bdp_drv);
> diff --git a/drivers/clk/mediatek/clk-mt2701-eth.c b/drivers/clk/mediatek/clk-mt2701-eth.c
> new file mode 100644
> index 0000000..b2a71a4
> --- /dev/null
> +++ b/drivers/clk/mediatek/clk-mt2701-eth.c
> @@ -0,0 +1,90 @@
> +/*
> + * Copyright (c) 2014 MediaTek Inc.
> + * Author: Shunli Wang <shunli.wang@mediatek.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/platform_device.h>
> +
> +#include "clk-mtk.h"
> +#include "clk-gate.h"
> +
> +#include <dt-bindings/clock/mt2701-clk.h>
> +
> +static const struct mtk_gate_regs eth_cg_regs = {
> + .sta_ofs = 0x0030,
> +};
> +
> +#define GATE_ETH(_id, _name, _parent, _shift) { \
> + .id = _id, \
> + .name = _name, \
> + .parent_name = _parent, \
> + .regs = ð_cg_regs, \
> + .shift = _shift, \
> + .ops = &mtk_clk_gate_ops_no_setclr_inv, \
> + }
> +
> +static const struct mtk_gate eth_clks[] = {
> + GATE_ETH(CLK_ETHSYS_HSDMA, "hsdma_clk", "ethif_sel", 5),
> + GATE_ETH(CLK_ETHSYS_ESW, "esw_clk", "ethpll_500m_ck", 6),
> + GATE_ETH(CLK_ETHSYS_GP2, "gp2_clk", "trgpll", 7),
> + GATE_ETH(CLK_ETHSYS_GP1, "gp1_clk", "ethpll_500m_ck", 8),
> + GATE_ETH(CLK_ETHSYS_PCM, "pcm_clk", "ethif_sel", 11),
> + GATE_ETH(CLK_ETHSYS_GDMA, "gdma_clk", "ethif_sel", 14),
> + GATE_ETH(CLK_ETHSYS_I2S, "i2s_clk", "ethif_sel", 17),
> + GATE_ETH(CLK_ETHSYS_CRYPTO, "crypto_clk", "ethif_sel", 29),
> +};
> +
> +static int mtk_ethsys_init(struct platform_device *pdev)
> +{
> + struct clk_onecell_data *clk_data;
> + int r;
> + struct device_node *node = pdev->dev.of_node;
> +
> + clk_data = mtk_alloc_clk_data(CLK_ETHSYS_NR);
> +
> + mtk_clk_register_gates(node, eth_clks, ARRAY_SIZE(eth_clks),
> + clk_data);
> +
> + r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> +
> + return r;
Just return of_clk_add_provider() please.
> +}
> +
> +static const struct of_device_id of_match_clk_mt2701_eth[] = {
> + { .compatible = "mediatek,mt2701-ethsys", },
> + {}
> +};
> +
> +static int clk_mt2701_eth_probe(struct platform_device *pdev)
> +{
> + int r;
> +
> + r = mtk_ethsys_init(pdev);
Same comment.
> + if (r) {
> + dev_err(&pdev->dev,
> + "could not register clock provider: %s: %d\n",
> + pdev->name, r);
> + }
> +
> + return r;
> +}
> +
> +static struct platform_driver clk_mt2701_eth_drv = {
> + .probe = clk_mt2701_eth_probe,
> + .driver = {
> + .name = "clk-mt2701-eth",
> + .of_match_table = of_match_clk_mt2701_eth,
> + },
> +};
> +
> +builtin_platform_driver(clk_mt2701_eth_drv);
> diff --git a/drivers/clk/mediatek/clk-mt2701-hif.c b/drivers/clk/mediatek/clk-mt2701-hif.c
> new file mode 100644
> index 0000000..e2b0039
> --- /dev/null
> +++ b/drivers/clk/mediatek/clk-mt2701-hif.c
> @@ -0,0 +1,87 @@
> +/*
> + * Copyright (c) 2014 MediaTek Inc.
> + * Author: Shunli Wang <shunli.wang@mediatek.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/platform_device.h>
> +
> +#include "clk-mtk.h"
> +#include "clk-gate.h"
> +
> +#include <dt-bindings/clock/mt2701-clk.h>
> +
> +static const struct mtk_gate_regs hif_cg_regs = {
> + .sta_ofs = 0x0030,
> +};
> +
> +#define GATE_HIF(_id, _name, _parent, _shift) { \
> + .id = _id, \
> + .name = _name, \
> + .parent_name = _parent, \
> + .regs = &hif_cg_regs, \
> + .shift = _shift, \
> + .ops = &mtk_clk_gate_ops_no_setclr_inv, \
> + }
> +
> +static const struct mtk_gate hif_clks[] = {
> + GATE_HIF(CLK_HIFSYS_USB0PHY, "usb0_phy_clk", "ethpll_500m_ck", 21),
> + GATE_HIF(CLK_HIFSYS_USB1PHY, "usb1_phy_clk", "ethpll_500m_ck", 22),
> + GATE_HIF(CLK_HIFSYS_PCIE0, "pcie0_clk", "ethpll_500m_ck", 24),
> + GATE_HIF(CLK_HIFSYS_PCIE1, "pcie1_clk", "ethpll_500m_ck", 25),
> + GATE_HIF(CLK_HIFSYS_PCIE2, "pcie2_clk", "ethpll_500m_ck", 26),
> +};
> +
> +static int mtk_hifsys_init(struct platform_device *pdev)
> +{
> + struct clk_onecell_data *clk_data;
> + int r;
> + struct device_node *node = pdev->dev.of_node;
> +
> + clk_data = mtk_alloc_clk_data(CLK_HIFSYS_NR);
> +
> + mtk_clk_register_gates(node, hif_clks, ARRAY_SIZE(hif_clks),
> + clk_data);
> +
> + r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> +
> + return r;
Just return of_clk_add_provider() please.
> +}
> +
> +static const struct of_device_id of_match_clk_mt2701_hif[] = {
> + { .compatible = "mediatek,mt2701-hifsys", },
> + {}
> +};
> +
> +static int clk_mt2701_hif_probe(struct platform_device *pdev)
> +{
> + int r;
> +
> + r = mtk_hifsys_init(pdev);
There's a pattern. Same comments apply for everything that uses
this style.
> + if (r) {
> + dev_err(&pdev->dev,
> + "could not register clock provider: %s: %d\n",
> + pdev->name, r);
> + }
> +
> + return r;
> +}
> +
> +static struct platform_driver clk_mt2701_hif_drv = {
> + .probe = clk_mt2701_hif_probe,
> + .driver = {
> + .name = "clk-mt2701-hif",
> + .of_match_table = of_match_clk_mt2701_hif,
> + },
> +};
> +
> +builtin_platform_driver(clk_mt2701_hif_drv);
[cut a bunch of same drivers]
> diff --git a/drivers/clk/mediatek/clk-mt2701.c b/drivers/clk/mediatek/clk-mt2701.c
> new file mode 100644
> index 0000000..c225256
> --- /dev/null
> +++ b/drivers/clk/mediatek/clk-mt2701.c
> @@ -0,0 +1,1046 @@
> +/*
> + * Copyright (c) 2014 MediaTek Inc.
> + * Author: Shunli Wang <shunli.wang@mediatek.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +
> +#include "clk-mtk.h"
> +#include "clk-gate.h"
> +
> +#include <dt-bindings/clock/mt2701-clk.h>
> +
> +/*
> + * For some clocks, we don't care what their actual rates are. And these
> + * clocks may change their rate on different products or different scenarios.
> + * So we model these clocks' rate as 0, to denote it's not an actual rate.
> + */
> +#define DUMMY_RATE 0
> +
> +static DEFINE_SPINLOCK(lock);
Please name this something more mtk specific. mt2701_clk_lock?
> +
> +static const struct mtk_fixed_clk top_fixed_clks[] = {
> + FIXED_CLK(CLK_TOP_DPI, "dpi_ck", "clk26m",
> + 108 * MHZ),
> + FIXED_CLK(CLK_TOP_DMPLL, "dmpll_ck", "clk26m",
> + 400 * MHZ),
> + FIXED_CLK(CLK_TOP_VENCPLL, "vencpll_ck", "clk26m",
> + 295750000),
> + FIXED_CLK(CLK_TOP_HDMI_0_PIX340M, "hdmi_0_pix340m", "clk26m",
> + 340 * MHZ),
> + FIXED_CLK(CLK_TOP_HDMI_0_DEEP340M, "hdmi_0_deep340m", "clk26m",
> + 340 * MHZ),
> + FIXED_CLK(CLK_TOP_HDMI_0_PLL340M, "hdmi_0_pll340m", "clk26m",
> + 340 * MHZ),
> + FIXED_CLK(CLK_TOP_HDMITX_CLKDIG_CTS, "hdmitx_dig_cts", "clk26m",
> + 300 * MHZ),
> + FIXED_CLK(CLK_TOP_HADDS2_FB, "hadds2_fbclk", "clk26m",
> + 27 * MHZ),
> + FIXED_CLK(CLK_TOP_WBG_DIG_416M, "wbg_dig_ck_416m", "clk26m",
> + 416 * MHZ),
> + FIXED_CLK(CLK_TOP_DSI0_LNTC_DSI, "dsi0_lntc_dsi", "clk26m",
> + 143 * MHZ),
> + FIXED_CLK(CLK_TOP_HDMI_SCL_RX, "hdmi_scl_rx", "clk26m",
> + 27 * MHZ),
> + FIXED_CLK(CLK_TOP_AUD_EXT1, "aud_ext1", "clk26m",
> + DUMMY_RATE),
> + FIXED_CLK(CLK_TOP_AUD_EXT2, "aud_ext2", "clk26m",
> + DUMMY_RATE),
> + FIXED_CLK(CLK_TOP_NFI1X_PAD, "nfi1x_pad", "clk26m",
> + DUMMY_RATE),
> +};
> +
> +static const struct mtk_fixed_factor top_fixed_divs[] = {
> + FACTOR(CLK_TOP_SYSPLL, "syspll_ck", "mainpll", 1, 1),
> + FACTOR(CLK_TOP_SYSPLL_D2, "syspll_d2", "mainpll", 1, 2),
> + FACTOR(CLK_TOP_SYSPLL_D3, "syspll_d3", "mainpll", 1, 3),
> + FACTOR(CLK_TOP_SYSPLL_D5, "syspll_d5", "mainpll", 1, 5),
> + FACTOR(CLK_TOP_SYSPLL_D7, "syspll_d7", "mainpll", 1, 7),
> + FACTOR(CLK_TOP_SYSPLL1_D2, "syspll1_d2", "syspll_d2", 1, 2),
> + FACTOR(CLK_TOP_SYSPLL1_D4, "syspll1_d4", "syspll_d2", 1, 4),
> + FACTOR(CLK_TOP_SYSPLL1_D8, "syspll1_d8", "syspll_d2", 1, 8),
> + FACTOR(CLK_TOP_SYSPLL1_D16, "syspll1_d16", "syspll_d2", 1, 16),
> + FACTOR(CLK_TOP_SYSPLL2_D2, "syspll2_d2", "syspll_d3", 1, 2),
> + FACTOR(CLK_TOP_SYSPLL2_D4, "syspll2_d4", "syspll_d3", 1, 4),
> + FACTOR(CLK_TOP_SYSPLL2_D8, "syspll2_d8", "syspll_d3", 1, 8),
> + FACTOR(CLK_TOP_SYSPLL3_D2, "syspll3_d2", "syspll_d5", 1, 2),
> + FACTOR(CLK_TOP_SYSPLL3_D4, "syspll3_d4", "syspll_d5", 1, 4),
> + FACTOR(CLK_TOP_SYSPLL4_D2, "syspll4_d2", "syspll_d7", 1, 2),
> + FACTOR(CLK_TOP_SYSPLL4_D4, "syspll4_d4", "syspll_d7", 1, 4),
> +
> + FACTOR(CLK_TOP_UNIVPLL, "univpll_ck", "univpll", 1, 1),
> + FACTOR(CLK_TOP_UNIVPLL_D2, "univpll_d2", "univpll", 1, 2),
> + FACTOR(CLK_TOP_UNIVPLL_D3, "univpll_d3", "univpll", 1, 3),
> + FACTOR(CLK_TOP_UNIVPLL_D5, "univpll_d5", "univpll", 1, 5),
> + FACTOR(CLK_TOP_UNIVPLL_D7, "univpll_d7", "univpll", 1, 7),
> + FACTOR(CLK_TOP_UNIVPLL_D26, "univpll_d26", "univpll", 1, 26),
> + FACTOR(CLK_TOP_UNIVPLL_D52, "univpll_d52", "univpll", 1, 52),
> + FACTOR(CLK_TOP_UNIVPLL_D108, "univpll_d108", "univpll", 1, 108),
> + FACTOR(CLK_TOP_USB_PHY48M, "usb_phy48m_ck", "univpll", 1, 26),
> + FACTOR(CLK_TOP_UNIVPLL1_D2, "univpll1_d2", "univpll_d2", 1, 2),
> + FACTOR(CLK_TOP_UNIVPLL1_D4, "univpll1_d4", "univpll_d2", 1, 4),
> + FACTOR(CLK_TOP_UNIVPLL1_D8, "univpll1_d8", "univpll_d2", 1, 8),
> + FACTOR(CLK_TOP_8BDAC, "8bdac_ck", "univpll_d2", 1, 1),
> + FACTOR(CLK_TOP_UNIVPLL2_D2, "univpll2_d2", "univpll_d3", 1, 2),
> + FACTOR(CLK_TOP_UNIVPLL2_D4, "univpll2_d4", "univpll_d3", 1, 4),
> + FACTOR(CLK_TOP_UNIVPLL2_D8, "univpll2_d8", "univpll_d3", 1, 8),
> + FACTOR(CLK_TOP_UNIVPLL2_D16, "univpll2_d16", "univpll_d3", 1, 16),
> + FACTOR(CLK_TOP_UNIVPLL2_D32, "univpll2_d32", "univpll_d3", 1, 32),
> + FACTOR(CLK_TOP_UNIVPLL3_D2, "univpll3_d2", "univpll_d5", 1, 2),
> + FACTOR(CLK_TOP_UNIVPLL3_D4, "univpll3_d4", "univpll_d5", 1, 4),
> + FACTOR(CLK_TOP_UNIVPLL3_D8, "univpll3_d8", "univpll_d5", 1, 8),
> +
> + FACTOR(CLK_TOP_MSDCPLL, "msdcpll_ck", "msdcpll", 1, 1),
> + FACTOR(CLK_TOP_MSDCPLL_D2, "msdcpll_d2", "msdcpll", 1, 2),
> + FACTOR(CLK_TOP_MSDCPLL_D4, "msdcpll_d4", "msdcpll", 1, 4),
> + FACTOR(CLK_TOP_MSDCPLL_D8, "msdcpll_d8", "msdcpll", 1, 8),
> +
> + FACTOR(CLK_TOP_MMPLL, "mmpll_ck", "mmpll", 1, 1),
> + FACTOR(CLK_TOP_MMPLL_D2, "mmpll_d2", "mmpll", 1, 2),
> +
> + FACTOR(CLK_TOP_DMPLL_D2, "dmpll_d2", "dmpll_ck", 1, 2),
> + FACTOR(CLK_TOP_DMPLL_D4, "dmpll_d4", "dmpll_ck", 1, 4),
> + FACTOR(CLK_TOP_DMPLL_X2, "dmpll_x2", "dmpll_ck", 1, 1),
> +
> + FACTOR(CLK_TOP_TVDPLL, "tvdpll_ck", "tvdpll", 1, 1),
> + FACTOR(CLK_TOP_TVDPLL_D2, "tvdpll_d2", "tvdpll", 1, 2),
> + FACTOR(CLK_TOP_TVDPLL_D4, "tvdpll_d4", "tvdpll", 1, 4),
> +
> + FACTOR(CLK_TOP_VDECPLL, "vdecpll_ck", "vdecpll", 1, 1),
> + FACTOR(CLK_TOP_TVD2PLL, "tvd2pll_ck", "tvd2pll", 1, 1),
> + FACTOR(CLK_TOP_TVD2PLL_D2, "tvd2pll_d2", "tvd2pll", 1, 2),
> +
> + FACTOR(CLK_TOP_MIPIPLL, "mipipll", "dpi_ck", 1, 1),
> + FACTOR(CLK_TOP_MIPIPLL_D2, "mipipll_d2", "dpi_ck", 1, 2),
> + FACTOR(CLK_TOP_MIPIPLL_D4, "mipipll_d4", "dpi_ck", 1, 4),
> +
> + FACTOR(CLK_TOP_HDMIPLL, "hdmipll_ck", "hdmitx_dig_cts", 1, 1),
> + FACTOR(CLK_TOP_HDMIPLL_D2, "hdmipll_d2", "hdmitx_dig_cts", 1, 2),
> + FACTOR(CLK_TOP_HDMIPLL_D3, "hdmipll_d3", "hdmitx_dig_cts", 1, 3),
> +
> + FACTOR(CLK_TOP_ARMPLL_1P3G, "armpll_1p3g_ck", "armpll", 1, 1),
> +
> + FACTOR(CLK_TOP_AUDPLL, "audpll", "audpll_sel", 1, 1),
> + FACTOR(CLK_TOP_AUDPLL_D4, "audpll_d4", "audpll_sel", 1, 4),
> + FACTOR(CLK_TOP_AUDPLL_D8, "audpll_d8", "audpll_sel", 1, 8),
> + FACTOR(CLK_TOP_AUDPLL_D16, "audpll_d16", "audpll_sel", 1, 16),
> + FACTOR(CLK_TOP_AUDPLL_D24, "audpll_d24", "audpll_sel", 1, 24),
> +
> + FACTOR(CLK_TOP_AUD1PLL_98M, "aud1pll_98m_ck", "aud1pll", 1, 3),
> + FACTOR(CLK_TOP_AUD2PLL_90M, "aud2pll_90m_ck", "aud2pll", 1, 3),
> + FACTOR(CLK_TOP_HADDS2PLL_98M, "hadds2pll_98m", "hadds2pll", 1, 3),
> + FACTOR(CLK_TOP_HADDS2PLL_294M, "hadds2pll_294m", "hadds2pll", 1, 1),
> + FACTOR(CLK_TOP_ETHPLL_500M, "ethpll_500m_ck", "ethpll", 1, 1),
> + FACTOR(CLK_TOP_CLK26M_D8, "clk26m_d8", "clk26m", 1, 8),
> + FACTOR(CLK_TOP_32K_INTERNAL, "32k_internal", "clk26m", 1, 793),
> + FACTOR(CLK_TOP_32K_EXTERNAL, "32k_external", "rtc32k", 1, 1),
> +};
> +
> +static const char * const axi_parents[] = {
> + "clk26m",
> + "syspll1_d2",
> + "syspll_d5",
> + "syspll1_d4",
> + "univpll_d5",
> + "univpll2_d2",
> + "mmpll_d2",
> + "dmpll_d2"
> +};
> +
> +static const char * const mem_parents[] = {
> + "clk26m",
> + "dmpll_ck"
> +};
> +
> +static const char * const ddrphycfg_parents[] = {
> + "clk26m",
> + "syspll1_d8"
> +};
> +
> +static const char * const mm_parents[] = {
> + "clk26m",
> + "vencpll_ck",
> + "syspll1_d2",
> + "syspll1_d4",
> + "univpll_d5",
> + "univpll1_d2",
> + "univpll2_d2",
> + "dmpll_ck"
> +};
> +
> +static const char * const pwm_parents[] = {
> + "clk26m",
> + "univpll2_d4",
> + "univpll3_d2",
> + "univpll1_d4",
> +};
> +
> +static const char * const vdec_parents[] = {
> + "clk26m",
> + "vdecpll_ck",
> + "syspll_d5",
> + "syspll1_d4",
> + "univpll_d5",
> + "univpll2_d2",
> + "vencpll_ck",
> + "msdcpll_d2",
> + "mmpll_d2"
> +};
> +
> +static const char * const mfg_parents[] = {
> + "clk26m",
> + "mmpll_ck",
> + "dmpll_x2_ck",
> + "msdcpll_ck",
> + "clk26m",
> + "syspll_d3",
> + "univpll_d3",
> + "univpll1_d2"
> +};
> +
> +static const char * const camtg_parents[] = {
> + "clk26m",
> + "univpll_d26",
> + "univpll2_d2",
> + "syspll3_d2",
> + "syspll3_d4",
> + "msdcpll_d2",
> + "mmpll_d2"
> +};
> +
> +static const char * const uart_parents[] = {
> + "clk26m",
> + "univpll2_d8"
> +};
> +
> +static const char * const spi_parents[] = {
> + "clk26m",
> + "syspll3_d2",
> + "syspll4_d2",
> + "univpll2_d4",
> + "univpll1_d8"
> +};
> +
> +static const char * const usb20_parents[] = {
> + "clk26m",
> + "univpll1_d8",
> + "univpll3_d4"
> +};
> +
> +static const char * const msdc30_parents[] = {
> + "clk26m",
> + "msdcpll_d2",
> + "syspll2_d2",
> + "syspll1_d4",
> + "univpll1_d4",
> + "univpll2_d4"
> +};
> +
> +static const char * const audio_parents[] = {
> + "clk26m",
> + "syspll1_d16"
> +};
> +
> +static const char * const aud_intbus_parents[] = {
> + "clk26m",
> + "syspll1_d4",
> + "syspll3_d2",
> + "syspll4_d2",
> + "univpll3_d2",
> + "univpll2_d4"
> +};
> +
> +static const char * const pmicspi_parents[] = {
> + "clk26m",
> + "syspll1_d8",
> + "syspll2_d4",
> + "syspll4_d2",
> + "syspll3_d4",
> + "syspll2_d8",
> + "syspll1_d16",
> + "univpll3_d4",
> + "univpll_d26",
> + "dmpll_d2",
> + "dmpll_d4"
> +};
> +
> +static const char * const scp_parents[] = {
> + "clk26m",
> + "syspll1_d8",
> + "dmpll_d2",
> + "dmpll_d4"
> +};
> +
> +static const char * const dpi0_parents[] = {
> + "clk26m",
> + "mipipll",
> + "mipipll_d2",
> + "mipipll_d4",
> + "clk26m",
> + "tvdpll_ck",
> + "tvdpll_d2",
> + "tvdpll_d4"
> +};
> +
> +static const char * const dpi1_parents[] = {
> + "clk26m",
> + "tvdpll_ck",
> + "tvdpll_d2",
> + "tvdpll_d4"
> +};
> +
> +static const char * const tve_parents[] = {
> + "clk26m",
> + "mipipll",
> + "mipipll_d2",
> + "mipipll_d4",
> + "clk26m",
> + "tvdpll_ck",
> + "tvdpll_d2",
> + "tvdpll_d4"
> +};
> +
> +static const char * const hdmi_parents[] = {
> + "clk26m",
> + "hdmipll_ck",
> + "hdmipll_d2",
> + "hdmipll_d3"
> +};
> +
> +static const char * const apll_parents[] = {
> + "clk26m",
> + "audpll",
> + "audpll_d4",
> + "audpll_d8",
> + "audpll_d16",
> + "audpll_d24",
> + "clk26m",
> + "clk26m"
> +};
> +
> +static const char * const rtc_parents[] = {
> + "32k_internal",
> + "32k_external",
> + "clk26m",
> + "univpll3_d8"
> +};
> +
> +static const char * const nfi2x_parents[] = {
> + "clk26m",
> + "syspll2_d2",
> + "syspll_d7",
> + "univpll3_d2",
> + "syspll2_d4",
> + "univpll3_d4",
> + "syspll4_d4",
> + "clk26m"
> +};
> +
> +static const char * const emmc_hclk_parents[] = {
> + "clk26m",
> + "syspll1_d2",
> + "syspll1_d4",
> + "syspll2_d2"
> +};
> +
> +static const char * const flash_parents[] = {
> + "clk26m_d8",
> + "clk26m",
> + "syspll2_d8",
> + "syspll3_d4",
> + "univpll3_d4",
> + "syspll4_d2",
> + "syspll2_d4",
> + "univpll2_d4"
> +};
> +
> +static const char * const di_parents[] = {
> + "clk26m",
> + "tvd2pll_ck",
> + "tvd2pll_d2",
> + "clk26m"
> +};
> +
> +static const char * const nr_osd_parents[] = {
> + "clk26m",
> + "vencpll_ck",
> + "syspll1_d2",
> + "syspll1_d4",
> + "univpll_d5",
> + "univpll1_d2",
> + "univpll2_d2",
> + "dmpll_ck"
> +};
> +
> +static const char * const hdmirx_bist_parents[] = {
> + "clk26m",
> + "syspll_d3",
> + "clk26m",
> + "syspll1_d16",
> + "syspll4_d2",
> + "syspll1_d4",
> + "vencpll_ck",
> + "clk26m"
> +};
> +
> +static const char * const intdir_parents[] = {
> + "clk26m",
> + "mmpll_ck",
> + "syspll_d2",
> + "univpll_d2"
> +};
> +
> +static const char * const asm_parents[] = {
> + "clk26m",
> + "univpll2_d4",
> + "univpll2_d2",
> + "syspll_d5"
> +};
> +
> +static const char * const ms_card_parents[] = {
> + "clk26m",
> + "univpll3_d8",
> + "syspll4_d4"
> +};
> +
> +static const char * const ethif_parents[] = {
> + "clk26m",
> + "syspll1_d2",
> + "syspll_d5",
> + "syspll1_d4",
> + "univpll_d5",
> + "univpll1_d2",
> + "dmpll_ck",
> + "dmpll_d2"
> +};
> +
> +static const char * const hdmirx_parents[] = {
> + "clk26m",
> + "univpll_d52"
> +};
> +
> +static const char * const cmsys_parents[] = {
> + "clk26m",
> + "syspll1_d2",
> + "univpll1_d2",
> + "univpll_d5",
> + "syspll_d5",
> + "syspll2_d2",
> + "syspll1_d4",
> + "syspll3_d2",
> + "syspll2_d4",
> + "syspll1_d8",
> + "clk26m",
> + "clk26m",
> + "clk26m",
> + "clk26m",
> + "clk26m"
> +};
> +
> +static const char * const clk_8bdac_parents[] = {
> + "32k_internal",
> + "8bdac_ck",
> + "clk26m",
> + "clk26m"
> +};
> +
> +static const char * const aud2dvd_parents[] = {
> + "a1sys_hp_ck",
> + "a2sys_hp_ck"
> +};
> +
> +static const char * const padmclk_parents[] = {
> + "clk26m",
> + "univpll_d26",
> + "univpll_d52",
> + "univpll_d108",
> + "univpll2_d8",
> + "univpll2_d16",
> + "univpll2_d32"
> +};
> +
> +static const char * const aud_mux_parents[] = {
> + "clk26m",
> + "aud1pll_98m_ck",
> + "aud2pll_90m_ck",
> + "hadds2pll_98m",
> + "audio_ext1_ck",
> + "audio_ext2_ck"
> +};
> +
> +static const char * const aud_src_parents[] = {
> + "aud_mux1_sel",
> + "aud_mux2_sel"
> +};
> +
> +static const char * const cpu_parents[] = {
> + "clk26m",
> + "armpll",
> + "mainpll",
> + "mmpll"
> +};
> +
> +static const struct mtk_composite top_muxes[] = {
> + MUX_GATE_FLAGS(CLK_TOP_AXI_SEL, "axi_sel", axi_parents,
> + 0x0040, 0, 3, 7, CLK_IS_CRITICAL),
> + MUX_GATE_FLAGS(CLK_TOP_MEM_SEL, "mem_sel", mem_parents,
> + 0x0040, 8, 1, 15, CLK_IS_CRITICAL),
> + MUX_GATE_FLAGS(CLK_TOP_DDRPHYCFG_SEL, "ddrphycfg_sel",
> + ddrphycfg_parents, 0x0040, 16, 1, 23, CLK_IS_CRITICAL),
> + MUX_GATE(CLK_TOP_MM_SEL, "mm_sel", mm_parents,
> + 0x0040, 24, 3, 31),
> +
> + MUX_GATE(CLK_TOP_PWM_SEL, "pwm_sel", pwm_parents,
> + 0x0050, 0, 2, 7),
> + MUX_GATE(CLK_TOP_VDEC_SEL, "vdec_sel", vdec_parents,
> + 0x0050, 8, 4, 15),
> + MUX_GATE(CLK_TOP_MFG_SEL, "mfg_sel", mfg_parents,
> + 0x0050, 16, 3, 23),
> + MUX_GATE(CLK_TOP_CAMTG_SEL, "camtg_sel", camtg_parents,
> + 0x0050, 24, 3, 31),
> + MUX_GATE(CLK_TOP_UART_SEL, "uart_sel", uart_parents,
> + 0x0060, 0, 1, 7),
> +
> + MUX_GATE(CLK_TOP_SPI0_SEL, "spi0_sel", spi_parents,
> + 0x0060, 8, 3, 15),
> + MUX_GATE(CLK_TOP_USB20_SEL, "usb20_sel", usb20_parents,
> + 0x0060, 16, 2, 23),
> + MUX_GATE(CLK_TOP_MSDC30_0_SEL, "msdc30_0_sel", msdc30_parents,
> + 0x0060, 24, 3, 31),
> +
> + MUX_GATE(CLK_TOP_MSDC30_1_SEL, "msdc30_1_sel", msdc30_parents,
> + 0x0070, 0, 3, 7),
> + MUX_GATE(CLK_TOP_MSDC30_2_SEL, "msdc30_2_sel", msdc30_parents,
> + 0x0070, 8, 3, 15),
> + MUX_GATE(CLK_TOP_AUDIO_SEL, "audio_sel", msdc30_parents,
> + 0x0070, 16, 1, 23),
> + MUX_GATE(CLK_TOP_AUDINTBUS_SEL, "aud_intbus_sel", aud_intbus_parents,
> + 0x0070, 24, 3, 31),
> +
> + MUX_GATE(CLK_TOP_PMICSPI_SEL, "pmicspi_sel", pmicspi_parents,
> + 0x0080, 0, 4, 7),
> + MUX_GATE(CLK_TOP_SCP_SEL, "scp_sel", scp_parents,
> + 0x0080, 8, 2, 15),
> + MUX_GATE(CLK_TOP_DPI0_SEL, "dpi0_sel", dpi0_parents,
> + 0x0080, 16, 3, 23),
> + MUX_GATE(CLK_TOP_DPI1_SEL, "dpi1_sel", dpi1_parents,
> + 0x0080, 24, 2, 31),
> +
> + MUX_GATE(CLK_TOP_TVE_SEL, "tve_sel", tve_parents,
> + 0x0090, 0, 3, 7),
> + MUX_GATE(CLK_TOP_HDMI_SEL, "hdmi_sel", hdmi_parents,
> + 0x0090, 8, 2, 15),
> + MUX_GATE(CLK_TOP_APLL_SEL, "apll_sel", apll_parents,
> + 0x0090, 16, 3, 23),
> +
> + MUX_GATE_FLAGS(CLK_TOP_RTC_SEL, "rtc_sel", rtc_parents,
> + 0x00A0, 0, 2, 7, CLK_IS_CRITICAL),
> + MUX_GATE(CLK_TOP_NFI2X_SEL, "nfi2x_sel", nfi2x_parents,
> + 0x00A0, 8, 3, 15),
> + MUX_GATE(CLK_TOP_EMMC_HCLK_SEL, "emmc_hclk_sel", emmc_hclk_parents,
> + 0x00A0, 24, 2, 31),
> +
> + MUX_GATE(CLK_TOP_FLASH_SEL, "flash_sel", flash_parents,
> + 0x00B0, 0, 3, 7),
> + MUX_GATE(CLK_TOP_DI_SEL, "di_sel", di_parents,
> + 0x00B0, 8, 2, 15),
> + MUX_GATE(CLK_TOP_NR_SEL, "nr_sel", nr_osd_parents,
> + 0x00B0, 16, 3, 23),
> + MUX_GATE(CLK_TOP_OSD_SEL, "osd_sel", nr_osd_parents,
> + 0x00B0, 24, 3, 31),
> +
> + MUX_GATE(CLK_TOP_HDMIRX_BIST_SEL, "hdmirx_bist_sel",
> + hdmirx_bist_parents, 0x00C0, 0, 3, 7),
> + MUX_GATE(CLK_TOP_INTDIR_SEL, "intdir_sel", intdir_parents,
> + 0x00C0, 8, 2, 15),
> + MUX_GATE(CLK_TOP_ASM_I_SEL, "asm_i_sel", asm_parents,
> + 0x00C0, 16, 2, 23),
> + MUX_GATE(CLK_TOP_ASM_M_SEL, "asm_m_sel", asm_parents,
> + 0x00C0, 24, 3, 31),
> +
> + MUX_GATE(CLK_TOP_ASM_H_SEL, "asm_h_sel", asm_parents,
> + 0x00D0, 0, 2, 7),
> + MUX_GATE(CLK_TOP_MS_CARD_SEL, "ms_card_sel", ms_card_parents,
> + 0x00D0, 16, 2, 23),
> + MUX_GATE(CLK_TOP_ETHIF_SEL, "ethif_sel", ethif_parents,
> + 0x00D0, 24, 3, 31),
> +
> + MUX_GATE(CLK_TOP_HDMIRX26_24_SEL, "hdmirx26_24_sel", hdmirx_parents,
> + 0x00E0, 0, 1, 7),
> + MUX_GATE(CLK_TOP_MSDC30_3_SEL, "msdc30_3_sel", msdc30_parents,
> + 0x00E0, 8, 3, 15),
> + MUX_GATE(CLK_TOP_CMSYS_SEL, "cmsys_sel", cmsys_parents,
> + 0x00E0, 16, 4, 23),
> +
> + MUX_GATE(CLK_TOP_SPI1_SEL, "spi2_sel", spi_parents,
> + 0x00E0, 24, 3, 31),
> + MUX_GATE(CLK_TOP_SPI2_SEL, "spi1_sel", spi_parents,
> + 0x00F0, 0, 3, 7),
> + MUX_GATE(CLK_TOP_8BDAC_SEL, "8bdac_sel", clk_8bdac_parents,
> + 0x00F0, 8, 2, 15),
> + MUX_GATE(CLK_TOP_AUD2DVD_SEL, "aud2dvd_sel", aud2dvd_parents,
> + 0x00F0, 16, 1, 23),
> +
> + MUX(CLK_TOP_PADMCLK_SEL, "padmclk_sel", padmclk_parents,
> + 0x0100, 0, 3),
> +
> + MUX(CLK_TOP_AUD_MUX1_SEL, "aud_mux1_sel", aud_mux_parents,
> + 0x012c, 0, 3),
> + MUX(CLK_TOP_AUD_MUX2_SEL, "aud_mux2_sel", aud_mux_parents,
> + 0x012c, 3, 3),
> + MUX(CLK_TOP_AUDPLL_MUX_SEL, "audpll_sel", aud_mux_parents,
> + 0x012c, 6, 3),
> + MUX_GATE(CLK_TOP_AUD_K1_SRC_SEL, "aud_k1_src_sel", aud_src_parents,
> + 0x012c, 15, 1, 23),
> + MUX_GATE(CLK_TOP_AUD_K2_SRC_SEL, "aud_k2_src_sel", aud_src_parents,
> + 0x012c, 16, 1, 24),
> + MUX_GATE(CLK_TOP_AUD_K3_SRC_SEL, "aud_k3_src_sel", aud_src_parents,
> + 0x012c, 17, 1, 25),
> + MUX_GATE(CLK_TOP_AUD_K4_SRC_SEL, "aud_k4_src_sel", aud_src_parents,
> + 0x012c, 18, 1, 26),
> + MUX_GATE(CLK_TOP_AUD_K5_SRC_SEL, "aud_k5_src_sel", aud_src_parents,
> + 0x012c, 19, 1, 27),
> + MUX_GATE(CLK_TOP_AUD_K6_SRC_SEL, "aud_k6_src_sel", aud_src_parents,
> + 0x012c, 20, 1, 28),
> +};
> +
> +static const struct mtk_clk_divider top_adj_divs[] = {
> + DIV_ADJ(CLK_TOP_AUD_EXTCK1_DIV, "audio_ext1_ck", "aud_ext1",
> + 0x0120, 0, 8),
> + DIV_ADJ(CLK_TOP_AUD_EXTCK2_DIV, "audio_ext2_ck", "aud_ext2",
> + 0x0120, 8, 8),
> + DIV_ADJ(CLK_TOP_AUD_MUX1_DIV, "aud_mux1_div", "aud_mux1_sel",
> + 0x0120, 16, 8),
> + DIV_ADJ(CLK_TOP_AUD_MUX2_DIV, "aud_mux2_div", "aud_mux2_sel",
> + 0x0120, 24, 8),
> + DIV_ADJ(CLK_TOP_AUD_K1_SRC_DIV, "aud_k1_src_div", "aud_k1_src_sel",
> + 0x0124, 0, 8),
> + DIV_ADJ(CLK_TOP_AUD_K2_SRC_DIV, "aud_k2_src_div", "aud_k2_src_sel",
> + 0x0124, 8, 8),
> + DIV_ADJ(CLK_TOP_AUD_K3_SRC_DIV, "aud_k3_src_div", "aud_k3_src_sel",
> + 0x0124, 16, 8),
> + DIV_ADJ(CLK_TOP_AUD_K4_SRC_DIV, "aud_k4_src_div", "aud_k4_src_sel",
> + 0x0124, 24, 8),
> + DIV_ADJ(CLK_TOP_AUD_K5_SRC_DIV, "aud_k5_src_div", "aud_k5_src_sel",
> + 0x0128, 0, 8),
> + DIV_ADJ(CLK_TOP_AUD_K6_SRC_DIV, "aud_k6_src_div", "aud_k6_src_sel",
> + 0x0128, 8, 8),
> +};
> +
> +static const struct mtk_gate_regs top_aud_cg_regs = {
> + .sta_ofs = 0x012C,
> +};
> +
> +#define GATE_TOP_AUD(_id, _name, _parent, _shift) { \
> + .id = _id, \
> + .name = _name, \
> + .parent_name = _parent, \
> + .regs = &top_aud_cg_regs, \
> + .shift = _shift, \
> + .ops = &mtk_clk_gate_ops_no_setclr, \
> + }
> +
> +static const struct mtk_gate top_clks[] = {
> + GATE_TOP_AUD(CLK_TOP_AUD_48K_TIMING, "a1sys_hp_ck", "aud_mux1_div",
> + 21),
> + GATE_TOP_AUD(CLK_TOP_AUD_44K_TIMING, "a2sys_hp_ck", "aud_mux2_div",
> + 22),
> + GATE_TOP_AUD(CLK_TOP_AUD_I2S1_MCLK, "aud_i2s1_mclk", "aud_k1_src_div",
> + 23),
> + GATE_TOP_AUD(CLK_TOP_AUD_I2S2_MCLK, "aud_i2s2_mclk", "aud_k2_src_div",
> + 24),
> + GATE_TOP_AUD(CLK_TOP_AUD_I2S3_MCLK, "aud_i2s3_mclk", "aud_k3_src_div",
> + 25),
> + GATE_TOP_AUD(CLK_TOP_AUD_I2S4_MCLK, "aud_i2s4_mclk", "aud_k4_src_div",
> + 26),
> + GATE_TOP_AUD(CLK_TOP_AUD_I2S5_MCLK, "aud_i2s5_mclk", "aud_k5_src_div",
> + 27),
> + GATE_TOP_AUD(CLK_TOP_AUD_I2S6_MCLK, "aud_i2s6_mclk", "aud_k6_src_div",
> + 28),
> +};
> +
> +void __iomem *devm_of_iomap(struct device *dev, int index)
Sorry what is this?
> +{
> + struct resource res;
> +
> + if (!dev)
> + return NULL;
> +
> + if (of_address_to_resource(dev->of_node, index, &res))
> + return NULL;
> +
> + return devm_ioremap(dev, res.start, resource_size(&res));
Can't we just use platform_get_resouce() and
devm_ioremap_resource() here? It looks like we always have a
platform device.
> +}
> +
> +static int mtk_topckgen_init(struct platform_device *pdev)
> +{
> + struct clk_onecell_data *clk_data;
> + void __iomem *base;
> + int r;
> + struct device_node *node = pdev->dev.of_node;
> +
> + base = devm_of_iomap(&pdev->dev, 0);
> + if (!base)
> + return -ENOMEM;
> +
> + clk_data = mtk_alloc_clk_data(CLK_TOP_NR);
> +
> + mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks),
> + clk_data);
> +
> + mtk_clk_register_factors(top_fixed_divs, ARRAY_SIZE(top_fixed_divs),
> + clk_data);
> +
> + mtk_clk_register_composites(top_muxes, ARRAY_SIZE(top_muxes),
> + base, &lock, clk_data);
> +
> + mtk_clk_register_dividers(top_adj_divs, ARRAY_SIZE(top_adj_divs),
> + base, &lock, clk_data);
> +
> + mtk_clk_register_gates(node, top_clks, ARRAY_SIZE(top_clks),
> + clk_data);
> +
> + r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> +
> + return r;
> +}
> +
> +static const struct mtk_gate_regs infra_cg_regs = {
> + .set_ofs = 0x0040,
> + .clr_ofs = 0x0044,
> + .sta_ofs = 0x0048,
> +};
> +
> +#define GATE_ICG(_id, _name, _parent, _shift) { \
> + .id = _id, \
> + .name = _name, \
> + .parent_name = _parent, \
> + .regs = &infra_cg_regs, \
> + .shift = _shift, \
> + .ops = &mtk_clk_gate_ops_setclr, \
> + }
> +
> +static const struct mtk_gate infra_clks[] = {
> + GATE_ICG(CLK_INFRA_DBG, "dbgclk", "axi_sel", 0),
> + GATE_ICG(CLK_INFRA_SMI, "smi_ck", "mm_sel", 1),
> + GATE_ICG(CLK_INFRA_QAXI_CM4, "cm4_ck", "axi_sel", 2),
> + GATE_ICG(CLK_INFRA_AUD_SPLIN_B, "audio_splin_bck", "hadds2pll_294m", 4),
> + GATE_ICG(CLK_INFRA_AUDIO, "audio_ck", "clk26m", 5),
> + GATE_ICG(CLK_INFRA_EFUSE, "efuse_ck", "clk26m", 6),
> + GATE_ICG(CLK_INFRA_L2C_SRAM, "l2c_sram_ck", "mm_sel", 7),
> + GATE_ICG(CLK_INFRA_M4U, "m4u_ck", "mem_sel", 8),
> + GATE_ICG(CLK_INFRA_CONNMCU, "connsys_bus", "wbg_dig_ck_416m", 12),
> + GATE_ICG(CLK_INFRA_TRNG, "trng_ck", "axi_sel", 13),
> + GATE_ICG(CLK_INFRA_RAMBUFIF, "rambufif_ck", "mem_sel", 14),
> + GATE_ICG(CLK_INFRA_CPUM, "cpum_ck", "mem_sel", 15),
> + GATE_ICG(CLK_INFRA_KP, "kp_ck", "axi_sel", 16),
> + GATE_ICG(CLK_INFRA_CEC, "cec_ck", "rtc_sel", 18),
> + GATE_ICG(CLK_INFRA_IRRX, "irrx_ck", "axi_sel", 19),
> + GATE_ICG(CLK_INFRA_PMICSPI, "pmicspi_ck", "pmicspi_sel", 22),
> + GATE_ICG(CLK_INFRA_PMICWRAP, "pmicwrap_ck", "axi_sel", 23),
> + GATE_ICG(CLK_INFRA_DDCCI, "ddcci_ck", "axi_sel", 24),
> +};
> +
> +static const struct mtk_fixed_factor infra_fixed_divs[] = {
> + FACTOR(CLK_INFRA_CLK_13M, "clk13m", "clk26m", 1, 2),
> +};
> +
> +static struct clk_onecell_data *infra_clk_data;
> +
> +static void mtk_infrasys_init_early(struct device_node *node)
> +{
> + int r, i;
> +
> + if (!infra_clk_data) {
> + infra_clk_data = mtk_alloc_clk_data(CLK_INFRA_NR);
> +
> + for (i = 0; i < CLK_INFRA_NR; i++)
> + infra_clk_data->clks[i] = ERR_PTR(-EPROBE_DEFER);
> + }
> +
> + mtk_clk_register_factors(infra_fixed_divs, ARRAY_SIZE(infra_fixed_divs),
> + infra_clk_data);
> +
> + r = of_clk_add_provider(node, of_clk_src_onecell_get, infra_clk_data);
> + if (r)
> + pr_err("%s(): could not register clock provider: %d\n",
> + __func__, r);
> +}
> +CLK_OF_DECLARE_DRIVER(mtk_infra, "mediatek,mt2701-infracfg",
> + mtk_infrasys_init_early);
> +
> +static int mtk_infrasys_init(struct platform_device *pdev)
> +{
> + int r, i;
> + struct device_node *node = pdev->dev.of_node;
> +
> + if (!infra_clk_data) {
> + infra_clk_data = mtk_alloc_clk_data(CLK_INFRA_NR);
> + } else {
> + for (i = 0; i < CLK_INFRA_NR; i++) {
> + if (infra_clk_data->clks[i] == ERR_PTR(-EPROBE_DEFER))
> + infra_clk_data->clks[i] = ERR_PTR(-ENOENT);
> + }
> + }
> +
> + mtk_clk_register_gates(node, infra_clks, ARRAY_SIZE(infra_clks),
> + infra_clk_data);
> + mtk_clk_register_factors(infra_fixed_divs, ARRAY_SIZE(infra_fixed_divs),
> + infra_clk_data);
> +
> + r = of_clk_add_provider(node, of_clk_src_onecell_get, infra_clk_data);
> +
> + return r;
> +}
> +
> +static const struct mtk_gate_regs peri0_cg_regs = {
> + .set_ofs = 0x0008,
> + .clr_ofs = 0x0010,
> + .sta_ofs = 0x0018,
> +};
> +
> +static const struct mtk_gate_regs peri1_cg_regs = {
> + .set_ofs = 0x000c,
> + .clr_ofs = 0x0014,
> + .sta_ofs = 0x001c,
> +};
> +
> +#define GATE_PERI0(_id, _name, _parent, _shift) { \
> + .id = _id, \
> + .name = _name, \
> + .parent_name = _parent, \
> + .regs = &peri0_cg_regs, \
> + .shift = _shift, \
> + .ops = &mtk_clk_gate_ops_setclr, \
> + }
> +
> +#define GATE_PERI1(_id, _name, _parent, _shift) { \
> + .id = _id, \
> + .name = _name, \
> + .parent_name = _parent, \
> + .regs = &peri1_cg_regs, \
> + .shift = _shift, \
> + .ops = &mtk_clk_gate_ops_setclr, \
> + }
> +
> +static const struct mtk_gate peri_clks[] = {
> + GATE_PERI0(CLK_PERI_USB0_MCU, "usb0_mcu_ck", "axi_sel", 31),
> + GATE_PERI0(CLK_PERI_ETH, "eth_ck", "clk26m", 30),
> + GATE_PERI0(CLK_PERI_SPI0, "spi0_ck", "spi0_sel", 29),
> + GATE_PERI0(CLK_PERI_AUXADC, "auxadc_ck", "clk26m", 28),
> + GATE_PERI0(CLK_PERI_I2C3, "i2c3_ck", "clk26m", 27),
> + GATE_PERI0(CLK_PERI_I2C2, "i2c2_ck", "axi_sel", 26),
> + GATE_PERI0(CLK_PERI_I2C1, "i2c1_ck", "axi_sel", 25),
> + GATE_PERI0(CLK_PERI_I2C0, "i2c0_ck", "axi_sel", 24),
> + GATE_PERI0(CLK_PERI_BTIF, "bitif_ck", "axi_sel", 23),
> + GATE_PERI0(CLK_PERI_UART3, "uart3_ck", "axi_sel", 22),
> + GATE_PERI0(CLK_PERI_UART2, "uart2_ck", "axi_sel", 21),
> + GATE_PERI0(CLK_PERI_UART1, "uart1_ck", "axi_sel", 20),
> + GATE_PERI0(CLK_PERI_UART0, "uart0_ck", "axi_sel", 19),
> + GATE_PERI0(CLK_PERI_NLI, "nli_ck", "axi_sel", 18),
> + GATE_PERI0(CLK_PERI_MSDC50_3, "msdc50_3_ck", "emmc_hclk_sel", 17),
> + GATE_PERI0(CLK_PERI_MSDC30_3, "msdc30_3_ck", "msdc30_3_sel", 16),
> + GATE_PERI0(CLK_PERI_MSDC30_2, "msdc30_2_ck", "msdc30_2_sel", 15),
> + GATE_PERI0(CLK_PERI_MSDC30_1, "msdc30_1_ck", "msdc30_1_sel", 14),
> + GATE_PERI0(CLK_PERI_MSDC30_0, "msdc30_0_ck", "msdc30_0_sel", 13),
> + GATE_PERI0(CLK_PERI_AP_DMA, "ap_dma_ck", "axi_sel", 12),
> + GATE_PERI0(CLK_PERI_USB1, "usb1_ck", "usb20_sel", 11),
> + GATE_PERI0(CLK_PERI_USB0, "usb0_ck", "usb20_sel", 10),
> + GATE_PERI0(CLK_PERI_PWM, "pwm_ck", "axi_sel", 9),
> + GATE_PERI0(CLK_PERI_PWM7, "pwm7_ck", "axi_sel", 8),
> + GATE_PERI0(CLK_PERI_PWM6, "pwm6_ck", "axi_sel", 7),
> + GATE_PERI0(CLK_PERI_PWM5, "pwm5_ck", "axi_sel", 6),
> + GATE_PERI0(CLK_PERI_PWM4, "pwm4_ck", "axi_sel", 5),
> + GATE_PERI0(CLK_PERI_PWM3, "pwm3_ck", "axi_sel", 4),
> + GATE_PERI0(CLK_PERI_PWM2, "pwm2_ck", "axi_sel", 3),
> + GATE_PERI0(CLK_PERI_PWM1, "pwm1_ck", "axi_sel", 2),
> + GATE_PERI0(CLK_PERI_THERM, "therm_ck", "axi_sel", 1),
> + GATE_PERI0(CLK_PERI_NFI, "nfi_ck", "nfi2x_sel", 0),
> +
> + GATE_PERI1(CLK_PERI_FCI, "fci_ck", "ms_card_sel", 11),
> + GATE_PERI1(CLK_PERI_SPI2, "spi2_ck", "spi2_sel", 10),
> + GATE_PERI1(CLK_PERI_SPI1, "spi1_ck", "spi1_sel", 9),
> + GATE_PERI1(CLK_PERI_HOST89_DVD, "host89_dvd_ck", "aud2dvd_sel", 8),
> + GATE_PERI1(CLK_PERI_HOST89_SPI, "host89_spi_ck", "spi0_sel", 7),
> + GATE_PERI1(CLK_PERI_HOST89_INT, "host89_int_ck", "axi_sel", 6),
> + GATE_PERI1(CLK_PERI_FLASH, "flash_ck", "nfi2x_sel", 5),
> + GATE_PERI1(CLK_PERI_NFI_PAD, "nfi_pad_ck", "nfi1x_pad", 4),
> + GATE_PERI1(CLK_PERI_NFI_ECC, "nfi_ecc_ck", "nfi1x_pad", 3),
> + GATE_PERI1(CLK_PERI_GCPU, "gcpu_ck", "axi_sel", 2),
> + GATE_PERI1(CLK_PERI_USB_SLV, "usbslv_ck", "axi_sel", 1),
> + GATE_PERI1(CLK_PERI_USB1_MCU, "usb1_mcu_ck", "axi_sel", 0),
> +};
> +
> +static const char * const uart_ck_sel_parents[] = {
> + "clk26m",
> + "uart_sel",
> +};
> +
> +static const struct mtk_composite peri_muxs[] = {
> + MUX(CLK_PERI_UART0_SEL, "uart0_ck_sel", uart_ck_sel_parents,
> + 0x40c, 0, 1),
> + MUX(CLK_PERI_UART1_SEL, "uart1_ck_sel", uart_ck_sel_parents,
> + 0x40c, 1, 1),
> + MUX(CLK_PERI_UART2_SEL, "uart2_ck_sel", uart_ck_sel_parents,
> + 0x40c, 2, 1),
> + MUX(CLK_PERI_UART3_SEL, "uart3_ck_sel", uart_ck_sel_parents,
> + 0x40c, 3, 1),
> +};
> +
> +static int mtk_pericfg_init(struct platform_device *pdev)
> +{
> + struct clk_onecell_data *clk_data;
> + void __iomem *base;
> + int r;
> + struct device_node *node = pdev->dev.of_node;
> +
> + base = devm_of_iomap(&pdev->dev, 0);
> + if (!base)
> + return -ENOMEM;
> +
> + clk_data = mtk_alloc_clk_data(CLK_PERI_NR);
> +
> + mtk_clk_register_gates(node, peri_clks, ARRAY_SIZE(peri_clks),
> + clk_data);
> +
> + mtk_clk_register_composites(peri_muxs, ARRAY_SIZE(peri_muxs), base,
> + &lock, clk_data);
> +
> + r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> +
> + return r;
Just return of_clk_add_provider()?
> +}
[...]
> +
> +static int clk_mt2701_probe(struct platform_device *pdev)
> +{
> + int (*clk_init)(struct platform_device *);
> + int r;
> +
> + clk_init = of_device_get_match_data(&pdev->dev);
> + if (!clk_init)
> + return -EINVAL;
> +
> + r = clk_init(pdev);
> + if (r) {
> + dev_err(&pdev->dev,
> + "could not register clock provider: %s: %d\n",
> + pdev->name, r);
> + }
Braces are unnecessary.
> +
> + return r;
> +}
> +
> +static struct platform_driver clk_mt2701_drv = {
> + .probe = clk_mt2701_probe,
> + .driver = {
> + .name = "clk-mt2701",
> + .owner = THIS_MODULE,
This is unnecessary because platform_driver_register() already
does it.
> + .of_match_table = of_match_clk_mt2701,
> + },
> +};
> +
> +static int __init clk_mt2701_init(void)
> +{
> + return platform_driver_register(&clk_mt2701_drv);
> +}
> +
> +arch_initcall(clk_mt2701_init);
> diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
> index bb30f70..0541df7 100644
> --- a/drivers/clk/mediatek/clk-mtk.c
> +++ b/drivers/clk/mediatek/clk-mtk.c
> @@ -58,6 +58,9 @@ void mtk_clk_register_fixed_clks(const struct mtk_fixed_clk *clks,
> for (i = 0; i < num; i++) {
> const struct mtk_fixed_clk *rc = &clks[i];
>
> + if (clk_data && !IS_ERR_OR_NULL(clk_data->clks[rc->id]))
> + continue;
> +
> clk = clk_register_fixed_rate(NULL, rc->name, rc->parent, 0,
> rc->rate);
>
> @@ -81,6 +84,9 @@ void mtk_clk_register_factors(const struct mtk_fixed_factor *clks,
> for (i = 0; i < num; i++) {
> const struct mtk_fixed_factor *ff = &clks[i];
>
> + if (clk_data && !IS_ERR_OR_NULL(clk_data->clks[ff->id]))
> + continue;
> +
> clk = clk_register_fixed_factor(NULL, ff->name, ff->parent_name,
> CLK_SET_RATE_PARENT, ff->mult, ff->div);
>
> @@ -116,6 +122,9 @@ int mtk_clk_register_gates(struct device_node *node,
> for (i = 0; i < num; i++) {
> const struct mtk_gate *gate = &clks[i];
>
> + if (!IS_ERR_OR_NULL(clk_data->clks[gate->id]))
> + continue;
> +
> clk = mtk_clk_register_gate(gate->name, gate->parent_name,
> regmap,
> gate->regs->set_ofs,
> @@ -232,6 +241,9 @@ void mtk_clk_register_composites(const struct mtk_composite *mcs,
> for (i = 0; i < num; i++) {
> const struct mtk_composite *mc = &mcs[i];
>
> + if (clk_data && !IS_ERR_OR_NULL(clk_data->clks[mc->id]))
> + continue;
> +
> clk = mtk_clk_register_composite(mc, base, lock);
>
> if (IS_ERR(clk)) {
> @@ -244,3 +256,31 @@ void mtk_clk_register_composites(const struct mtk_composite *mcs,
> clk_data->clks[mc->id] = clk;
> }
> }
> +
> +void mtk_clk_register_dividers(const struct mtk_clk_divider *mcds,
> + int num, void __iomem *base, spinlock_t *lock,
> + struct clk_onecell_data *clk_data)
> +{
> + struct clk *clk;
> + int i;
> +
> + for (i = 0; i < num; i++) {
> + const struct mtk_clk_divider *mcd = &mcds[i];
> +
> + if (clk_data && !IS_ERR_OR_NULL(clk_data->clks[mcd->id]))
NULL is a valid clk. IS_ERR_OR_NULL is usually wrong.
> + continue;
> +
> + clk = clk_register_divider(NULL, mcd->name, mcd->parent_name,
> + mcd->flags, base + mcd->div_reg, mcd->div_shift,
> + mcd->div_width, mcd->clk_divider_flags, lock);
> +
> + if (IS_ERR(clk)) {
> + pr_err("Failed to register clk %s: %ld\n",
> + mcd->name, PTR_ERR(clk));
> + continue;
> + }
> +
> + if (clk_data)
> + clk_data->clks[mcd->id] = clk;
> + }
> +}
> diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
> index 9f24fcf..f5d6b70 100644
> --- a/drivers/clk/mediatek/clk-mtk.h
> +++ b/drivers/clk/mediatek/clk-mtk.h
> @@ -87,7 +87,8 @@ struct mtk_composite {
> * In case the rate change propagation to parent clocks is undesirable,
> * this macro allows to specify the clock flags manually.
> */
> -#define MUX_GATE_FLAGS(_id, _name, _parents, _reg, _shift, _width, _gate, _flags) { \
> +#define MUX_GATE_FLAGS(_id, _name, _parents, _reg, _shift, _width, \
> + _gate, _flags) { \
> .id = _id, \
> .name = _name, \
> .mux_reg = _reg, \
> @@ -106,7 +107,8 @@ struct mtk_composite {
> * parent clock by default.
> */
> #define MUX_GATE(_id, _name, _parents, _reg, _shift, _width, _gate) \
> - MUX_GATE_FLAGS(_id, _name, _parents, _reg, _shift, _width, _gate, CLK_SET_RATE_PARENT)
> + MUX_GATE_FLAGS(_id, _name, _parents, _reg, _shift, _width, \
> + _gate, CLK_SET_RATE_PARENT)
>
> #define MUX(_id, _name, _parents, _reg, _shift, _width) { \
> .id = _id, \
> @@ -121,7 +123,8 @@ struct mtk_composite {
> .flags = CLK_SET_RATE_PARENT, \
> }
>
> -#define DIV_GATE(_id, _name, _parent, _gate_reg, _gate_shift, _div_reg, _div_width, _div_shift) { \
> +#define DIV_GATE(_id, _name, _parent, _gate_reg, _gate_shift, _div_reg, \
> + _div_width, _div_shift) { \
Did anything actually change? Checkpatch fix?
> .id = _id, \
> .parent = _parent, \
> .name = _name, \
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply
* [PATCHv4 00/15] clk: ti: add support for hwmod clocks
From: Stephen Boyd @ 2016-10-28 0:53 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1476805568-19264-1-git-send-email-t-kristo@ti.com>
On 10/18, Tero Kristo wrote:
> Hi,
>
> As a recap, this series is part of the ongoing work to get rid of the
> hwmod database under mach-omap2 folder. This series converts the
> existing clock related functionality to a new clock type, which will
> allow removing all the .clkctrl related items from hwmod database.
> This series adds sample solution for OMAP4 only, rest of the SoCs can
> be converted automatically once the approach is acceptable.
>
> v4 has the following high level changes compared to v3:
> - Clock data is now statically built-in to the driver
> - Adds clockdomain provider support, which can be used to fetch
> clocks based on clockdomain relation. Only clockdomains need to be
> registered within DT.
> - Added some automatic clock alias generation support to the TI clock
> drivers, if this is not acceptable, I can change this to add all the
> aliases under the individual drivers/clk/ti/clk-xyz.c files
Is there a plan to get rid of the aliases entirely? Or we can't
do that because DT is not fully supported on these platforms? I'm
mostly wondering how long that sort of code is going to stick
around and if it's better to fully compartmentalize it to the
SoCs that are affected or if it should be a core feature of TI
driver.
> - As a sample, only omap4 clock data is available with this set
>
> After this series, the clock data can be dropped from the hwmod database
> for OMAP4, I have working patches for this for anybody interested. Also,
> the DT files require some modifications to add proper support for
> clockdomain providers, and drop some unnecessary clock nodes.
Can this be shared as a git tree on the web? Hopefully I can see
the resulting DTS and understand what's going on better.
>
> Boot + simple PM test seems to be working on OMAP4 with this set, and
> boot test with other boards I have access to don't seem to cause any
> issues. Applies on top of 4.9-rc1.
>
Awesome!
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply
* [PATCHv4 11/15] clk: ti: clockdomain: add clock provider support to clockdomains
From: Stephen Boyd @ 2016-10-28 0:50 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1476805568-19264-12-git-send-email-t-kristo@ti.com>
On 10/18, Tero Kristo wrote:
> Clockdomains can now be used as clock providers in the system. This
> patch initializes the provider data during init, and parses the clocks
> while they are being registered. An xlate function for the provider
> is also given.
>
> Signed-off-by: Tero Kristo <t-kristo@ti.com>
Please Cc dt reviewers on binding updates. I suppose a PRCM is
like an MFD that has clocks and resets under it? On other
platforms we've combined that all into one node and just had
#clock-cells and #reset-cells in that node. Is there any reason
we can't do that here?
> ---
> .../devicetree/bindings/arm/omap/prcm.txt | 13 ++
> .../devicetree/bindings/clock/ti/clockdomain.txt | 12 +-
> arch/arm/mach-omap2/io.c | 2 +
> drivers/clk/ti/clock.h | 1 +
> drivers/clk/ti/clockdomain.c | 147 +++++++++++++++++++++
> include/linux/clk/ti.h | 3 +
> 6 files changed, 177 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/arm/omap/prcm.txt b/Documentation/devicetree/bindings/arm/omap/prcm.txt
> index 3eb6d7a..301f576 100644
> --- a/Documentation/devicetree/bindings/arm/omap/prcm.txt
> +++ b/Documentation/devicetree/bindings/arm/omap/prcm.txt
> @@ -47,6 +47,19 @@ cm: cm at 48004000 {
> };
> }
>
> +cm2: cm2 at 8000 {
> + compatible = "ti,omap4-cm2";
> + reg = <0x8000 0x3000>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0 0x8000 0x3000>;
> +
> + l4_per_clkdm: l4_per_clkdm {
> + compatible = "ti,clockdomain";
> + reg = <0x1400 0x200>;
Should there be #clock-cells = <1> here? Also node name should
have an @1400 after it?
> + };
> +};
> +
> &cm_clocks {
> omap2_32k_fck: omap_32k_fck {
> #clock-cells = <0>;
> diff --git a/Documentation/devicetree/bindings/clock/ti/clockdomain.txt b/Documentation/devicetree/bindings/clock/ti/clockdomain.txt
> index cb76b3f..5d8ca61 100644
> --- a/Documentation/devicetree/bindings/clock/ti/clockdomain.txt
> +++ b/Documentation/devicetree/bindings/clock/ti/clockdomain.txt
> @@ -14,11 +14,21 @@ hardware hierarchy.
>
> Required properties:
> - compatible : shall be "ti,clockdomain"
> -- #clock-cells : from common clock binding; shall be set to 0.
> +- #clock-cells : from common clock binding; shall be set to 1 if this
> + clockdomain acts as a clock provider.
> +
> +Optional properties:
> - clocks : link phandles of clocks within this domain
> +- reg : address for the clockdomain
>
> Examples:
> dss_clkdm: dss_clkdm {
> compatible = "ti,clockdomain";
> clocks = <&dss1_alwon_fck_3430es2>, <&dss_ick_3430es2>;
> };
> +
> + l4_per_clkdm: l4_per_clkdm {
add an @1400?
> + compatible = "ti,clockdomain";
> + #clock-cells = <1>;
> + reg = <0x1400 0x200>;
> + };
> diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
> index 0e9acdd..c1a5cfb 100644
> --- a/arch/arm/mach-omap2/io.c
> +++ b/arch/arm/mach-omap2/io.c
> @@ -794,6 +794,8 @@ int __init omap_clk_init(void)
> if (ret)
> return ret;
>
> + ti_dt_clockdomains_early_setup();
> +
> of_clk_init(NULL);
>
> ti_dt_clk_init_retry_clks();
> diff --git a/drivers/clk/ti/clock.h b/drivers/clk/ti/clock.h
> index 9b8a5f2..f6383ab 100644
> --- a/drivers/clk/ti/clock.h
> +++ b/drivers/clk/ti/clock.h
> @@ -205,6 +205,7 @@ struct clk *ti_clk_register(struct device *dev, struct clk_hw *hw,
>
> int ti_clk_get_memmap_index(struct device_node *node);
> void __iomem *ti_clk_get_reg_addr(struct device_node *node, int index);
> +void __iomem *ti_clk_get_reg_addr_clkdm(const char *clkdm_name, u16 offset);
> void ti_dt_clocks_register(struct ti_dt_clk *oclks);
> int ti_clk_retry_init(struct device_node *node, struct clk_hw *hw,
> ti_of_clk_init_cb_t func);
> diff --git a/drivers/clk/ti/clockdomain.c b/drivers/clk/ti/clockdomain.c
> index 704157d..7b0a6c3 100644
> --- a/drivers/clk/ti/clockdomain.c
> +++ b/drivers/clk/ti/clockdomain.c
> @@ -28,6 +28,23 @@
> #define pr_fmt(fmt) "%s: " fmt, __func__
>
> /**
> + * struct ti_clkdm - TI clockdomain data structure
> + * @name: name of the clockdomain
> + * @index: index of the clk_iomap struct for this clkdm
> + * @offset: clockdomain offset from the beginning of the iomap
> + * @link: link to the list
> + */
> +struct ti_clkdm {
> + const char *name;
> + int index;
> + u32 offset;
> + struct list_head link;
> + struct list_head clocks;
> +};
> +
> +static LIST_HEAD(clkdms);
> +
> +/**
> * omap2_clkops_enable_clkdm - increment usecount on clkdm of @hw
> * @hw: struct clk_hw * of the clock being enabled
> *
> @@ -116,6 +133,8 @@ void omap2_init_clk_clkdm(struct clk_hw *hw)
> struct clk_hw_omap *clk = to_clk_hw_omap(hw);
> struct clockdomain *clkdm;
> const char *clk_name;
> + struct ti_clkdm *ti_clkdm;
> + bool match = false;
>
> if (!clk->clkdm_name)
> return;
> @@ -130,7 +149,21 @@ void omap2_init_clk_clkdm(struct clk_hw *hw)
> } else {
> pr_debug("clock: could not associate clk %s to clkdm %s\n",
> clk_name, clk->clkdm_name);
> + return;
> }
> +
> + list_for_each_entry(ti_clkdm, &clkdms, link) {
> + if (!strcmp(ti_clkdm->name, clk->clkdm_name)) {
> + match = true;
> + break;
Or just goto found and then drop the match bool thing.
> + }
> + }
> +
> + if (!match)
> + return;
> +
> + /* Add clock to the list of provided clocks */
> + list_add(&clk->clkdm_link, &ti_clkdm->clocks);
> }
>
> static void __init of_ti_clockdomain_setup(struct device_node *node)
> @@ -161,11 +194,125 @@ static void __init of_ti_clockdomain_setup(struct device_node *node)
> }
> }
>
> +static struct clk_hw *clkdm_clk_xlate(struct of_phandle_args *clkspec,
> + void *data)
> +{
> + struct ti_clkdm *clkdm = data;
> + struct clk_hw_omap *clk;
> + u16 offset = clkspec->args[0];
> +
> + list_for_each_entry(clk, &clkdm->clocks, clkdm_link)
> + if (((u32)clk->enable_reg & 0xffff) - clkdm->offset == offset)
This looks scary.
> + return &clk->hw;
> +
> + return ERR_PTR(-EINVAL);
> +}
> +
> +static int ti_clk_register_clkdm(struct device_node *node)
> +{
> + u64 clkdm_addr;
> + u64 inst_addr;
> + const __be32 *reg;
> + u32 offset;
> + int idx;
> + struct ti_clkdm *clkdm;
> + int ret;
> +
> + reg = of_get_address(node, 0, NULL, NULL);
> + if (!reg)
> + return -ENOENT;
> +
> + clkdm_addr = of_translate_address(node, reg);
> +
> + reg = of_get_address(node->parent, 0, NULL, NULL);
> + if (!reg)
> + return -EINVAL;
> +
> + inst_addr = of_translate_address(node->parent, reg);
> +
> + offset = clkdm_addr - inst_addr;
> +
I guess the usual offset tricks are still going on in the TI clk
driver? Is there a plan to stop doing that at some point?
> + idx = ti_clk_get_memmap_index(node->parent);
> +
> + if (idx < 0) {
> + pr_err("bad memmap index for %s\n", node->name);
> + return idx;
> + }
> +
> + clkdm = kzalloc(sizeof(*clkdm), GFP_KERNEL);
> + if (!clkdm)
> + return -ENOMEM;
> +
> + clkdm->name = node->name;
> + clkdm->index = idx;
> + clkdm->offset = offset;
> +
> + INIT_LIST_HEAD(&clkdm->clocks);
> +
> + list_add(&clkdm->link, &clkdms);
> +
> + ret = of_clk_add_hw_provider(node, clkdm_clk_xlate, clkdm);
> + if (ret) {
> + list_del(&clkdm->link);
> + kfree(clkdm);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +/**
> + * ti_clk_get_reg_addr_clkdm - get register address relative to clockdomain
> + * @clkdm_name: parent clockdomain
> + * @offset: offset from the clockdomain
> + *
> + * Gets a register address relative to parent clockdomain. Searches the
> + * list of available clockdomain, and if match is found, calculates the
> + * register address from the iomap relative to the clockdomain.
> + * Returns the register address, or NULL if not found.
> + */
> +void __iomem *ti_clk_get_reg_addr_clkdm(const char *clkdm_name, u16 offset)
> +{
> + u32 reg;
> + struct clk_omap_reg *reg_setup;
> + struct ti_clkdm *clkdm;
> + bool match = false;
> +
> + reg_setup = (struct clk_omap_reg *)®
> +
> + /* XXX: get offset from clkdm, get base for instance */
> + list_for_each_entry(clkdm, &clkdms, link) {
> + if (!strcmp(clkdm->name, clkdm_name)) {
> + match = true;
> + break;
> + }
> + }
> +
> + if (!match) {
> + pr_err("%s: no entry for %s\n", __func__, clkdm_name);
> + return NULL;
> + }
> +
> + reg_setup->offset = clkdm->offset + offset;
> + reg_setup->index = clkdm->index;
> +
> + return (void __iomem *)reg;
> +}
> +
> static const struct of_device_id ti_clkdm_match_table[] __initconst = {
> { .compatible = "ti,clockdomain" },
> { }
> };
>
> +void __init ti_dt_clockdomains_early_setup(void)
> +{
> + struct device_node *np;
> +
> + for_each_matching_node(np, ti_clkdm_match_table) {
> + ti_clk_register_clkdm(np);
> + }
Nitpick: drop braces please.
> +}
> +
> /**
> * ti_dt_clockdomains_setup - setup device tree clockdomains
> *
> diff --git a/include/linux/clk/ti.h b/include/linux/clk/ti.h
> index 626ae94..afccb48 100644
> --- a/include/linux/clk/ti.h
> +++ b/include/linux/clk/ti.h
> @@ -125,6 +125,7 @@ struct clk_hw_omap_ops {
> /**
> * struct clk_hw_omap - OMAP struct clk
> * @node: list_head connecting this clock into the full clock list
> + * @clkdm_link: list_head connecting this clock into the clockdomain
> * @enable_reg: register to write to enable the clock (see @enable_bit)
> * @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
> * @flags: see "struct clk.flags possibilities" above
> @@ -137,6 +138,7 @@ struct clk_hw_omap_ops {
> struct clk_hw_omap {
> struct clk_hw hw;
> struct list_head node;
> + struct list_head clkdm_link;
> unsigned long fixed_rate;
> u8 fixed_div;
> void __iomem *enable_reg;
> @@ -251,6 +253,7 @@ int omap2_reprogram_dpllcore(struct clk_hw *clk, unsigned long rate,
> unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk);
>
> void ti_dt_clk_init_retry_clks(void);
> +void ti_dt_clockdomains_early_setup(void);
> void ti_dt_clockdomains_setup(void);
> int ti_clk_setup_ll_ops(struct ti_clk_ll_ops *ops);
>
> --
> 1.9.1
>
--
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a Linux Foundation Collaborative Project
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