* [PATCH V2 1/4] dt-bindings: fsl: add i.MX7ULP PMC binding doc
2020-04-13 6:49 [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode peng.fan
@ 2020-04-13 6:49 ` peng.fan
2020-04-13 6:49 ` [PATCH V2 2/4] ARM: dts: imx7ulp: add pmc node peng.fan
` (3 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: peng.fan @ 2020-04-13 6:49 UTC (permalink / raw)
To: shawnguo, s.hauer, sboyd, robh+dt
Cc: Peng Fan, abel.vesa, Anson.Huang, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
From: Peng Fan <peng.fan@nxp.com>
Add i.MX7ULP Power Management Controller binding doc
pmc0 is used by M4, pmc1 is used by A7, they have different
register name and usage.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
V2:
Fix dt_bindings_check
.../bindings/arm/freescale/imx7ulp_pmc.yaml | 32 ++++++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/freescale/imx7ulp_pmc.yaml
diff --git a/Documentation/devicetree/bindings/arm/freescale/imx7ulp_pmc.yaml b/Documentation/devicetree/bindings/arm/freescale/imx7ulp_pmc.yaml
new file mode 100644
index 000000000000..c60903039718
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/freescale/imx7ulp_pmc.yaml
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/freescale/imx7ulp_pmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: i.MX7ULP Power Management Controller(PMC) Device Tree Bindings
+
+maintainers:
+ - Peng Fan <peng.fan@nxp.com>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - fsl,imx7ulp-pmc0
+ - fsl,imx7ulp-pmc1
+
+ reg:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+
+examples:
+ - |
+ pmc0: pmc0@410a1000 {
+ compatible = "fsl,imx7ulp-pmc0";
+ reg = <0x410a1000 0x1000>;
+ };
+...
--
2.16.4
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^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH V2 2/4] ARM: dts: imx7ulp: add pmc node
2020-04-13 6:49 [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode peng.fan
2020-04-13 6:49 ` [PATCH V2 1/4] dt-bindings: fsl: add i.MX7ULP PMC binding doc peng.fan
@ 2020-04-13 6:49 ` peng.fan
2020-04-13 6:49 ` [PATCH V2 3/4] ARM: imx: imx7ulp: support HSRUN mode peng.fan
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: peng.fan @ 2020-04-13 6:49 UTC (permalink / raw)
To: shawnguo, s.hauer, sboyd, robh+dt
Cc: Peng Fan, abel.vesa, Anson.Huang, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
From: Peng Fan <peng.fan@nxp.com>
Add i.MX7ULP pmc0/1 node
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
V2:
None
arch/arm/boot/dts/imx7ulp.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/imx7ulp.dtsi b/arch/arm/boot/dts/imx7ulp.dtsi
index f7c4878534c8..bc9d692c0530 100644
--- a/arch/arm/boot/dts/imx7ulp.dtsi
+++ b/arch/arm/boot/dts/imx7ulp.dtsi
@@ -286,6 +286,11 @@
assigned-clock-parents = <&scg1 IMX7ULP_CLK_SOSC_BUS_CLK>;
};
+ pmc1: pmc1@40400000 {
+ compatible = "fsl,imx7ulp-pmc1";
+ reg = <0x40400000 0x1000>;
+ };
+
smc1: clock-controller@40410000 {
compatible = "fsl,imx7ulp-smc1";
reg = <0x40410000 0x1000>;
@@ -447,6 +452,11 @@
reg = <0x41080000 0x80000>;
ranges;
+ pmc0: pmc0@410a1000 {
+ compatible = "fsl,imx7ulp-pmc0";
+ reg = <0x410a1000 0x1000>;
+ };
+
sim: sim@410a3000 {
compatible = "fsl,imx7ulp-sim", "syscon";
reg = <0x410a3000 0x1000>;
--
2.16.4
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^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH V2 3/4] ARM: imx: imx7ulp: support HSRUN mode
2020-04-13 6:49 [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode peng.fan
2020-04-13 6:49 ` [PATCH V2 1/4] dt-bindings: fsl: add i.MX7ULP PMC binding doc peng.fan
2020-04-13 6:49 ` [PATCH V2 2/4] ARM: dts: imx7ulp: add pmc node peng.fan
@ 2020-04-13 6:49 ` peng.fan
2020-04-13 6:49 ` [PATCH V2 4/4] ARM: imx: cpuidle-imx7ulp: Stop mode disallowed when HSRUN peng.fan
2020-04-14 13:44 ` [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode Shawn Guo
4 siblings, 0 replies; 7+ messages in thread
From: peng.fan @ 2020-04-13 6:49 UTC (permalink / raw)
To: shawnguo, s.hauer, sboyd, robh+dt
Cc: Peng Fan, abel.vesa, Anson.Huang, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
From: Peng Fan <peng.fan@nxp.com>
Configure PMPROT to let ARM core could run into HSRUN mode.
In LDO-enabled mode, HSRUN mode is not allowed, so add a check before
configure PMPROT.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
V2:
None
arch/arm/mach-imx/pm-imx7ulp.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/arm/mach-imx/pm-imx7ulp.c b/arch/arm/mach-imx/pm-imx7ulp.c
index 2e756d8191fa..393faf1e8382 100644
--- a/arch/arm/mach-imx/pm-imx7ulp.c
+++ b/arch/arm/mach-imx/pm-imx7ulp.c
@@ -11,6 +11,10 @@
#include "common.h"
+#define PMC0_CTRL 0x28
+#define BM_CTRL_LDOEN BIT(31)
+
+#define SMC_PMPROT 0x8
#define SMC_PMCTRL 0x10
#define BP_PMCTRL_PSTOPO 16
#define PSTOPO_PSTOP3 0x3
@@ -25,7 +29,10 @@
#define BM_PMCTRL_RUNM (3 << BP_PMCTRL_RUNM)
#define BM_PMCTRL_STOPM (7 << BP_PMCTRL_STOPM)
+#define BM_PMPROT_AHSRUN BIT(7)
+
static void __iomem *smc1_base;
+static void __iomem *pmc0_base;
int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode)
{
@@ -65,5 +72,13 @@ void __init imx7ulp_pm_init(void)
of_node_put(np);
WARN_ON(!smc1_base);
+ np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-pmc0");
+ pmc0_base = of_iomap(np, 0);
+ WARN_ON(!pmc0_base);
+ of_node_put(np);
+
+ if (!(readl_relaxed(pmc0_base + PMC0_CTRL) & BM_CTRL_LDOEN))
+ writel_relaxed(BM_PMPROT_AHSRUN, smc1_base + SMC_PMPROT);
+
imx7ulp_set_lpm(ULP_PM_RUN);
}
--
2.16.4
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^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH V2 4/4] ARM: imx: cpuidle-imx7ulp: Stop mode disallowed when HSRUN
2020-04-13 6:49 [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode peng.fan
` (2 preceding siblings ...)
2020-04-13 6:49 ` [PATCH V2 3/4] ARM: imx: imx7ulp: support HSRUN mode peng.fan
@ 2020-04-13 6:49 ` peng.fan
2020-04-14 13:44 ` [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode Shawn Guo
4 siblings, 0 replies; 7+ messages in thread
From: peng.fan @ 2020-04-13 6:49 UTC (permalink / raw)
To: shawnguo, s.hauer, sboyd, robh+dt
Cc: Peng Fan, abel.vesa, Anson.Huang, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
From: Peng Fan <peng.fan@nxp.com>
When cpu runs in HSRUN mode, cpuidle is not allowed to run into
Stop mode. So add imx7ulp_get_mode to get thr cpu run mode,
and use WAIT mode instead, when cpu in HSRUN mode.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
V2:
None
arch/arm/mach-imx/common.h | 1 +
arch/arm/mach-imx/cpuidle-imx7ulp.c | 14 +++++++++++---
arch/arm/mach-imx/pm-imx7ulp.c | 10 ++++++++++
3 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h
index 5aa5796cff0e..db542da4fe67 100644
--- a/arch/arm/mach-imx/common.h
+++ b/arch/arm/mach-imx/common.h
@@ -104,6 +104,7 @@ void imx6_set_int_mem_clk_lpm(bool enable);
void imx6sl_set_wait_clk(bool enter);
int imx_mmdc_get_ddr_type(void);
int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode);
+u32 imx7ulp_get_mode(void);
void imx_cpu_die(unsigned int cpu);
int imx_cpu_kill(unsigned int cpu);
diff --git a/arch/arm/mach-imx/cpuidle-imx7ulp.c b/arch/arm/mach-imx/cpuidle-imx7ulp.c
index ca86c967d19e..e7009d10b331 100644
--- a/arch/arm/mach-imx/cpuidle-imx7ulp.c
+++ b/arch/arm/mach-imx/cpuidle-imx7ulp.c
@@ -15,10 +15,18 @@
static int imx7ulp_enter_wait(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)
{
- if (index == 1)
+ u32 mode;
+
+ if (index == 1) {
imx7ulp_set_lpm(ULP_PM_WAIT);
- else
- imx7ulp_set_lpm(ULP_PM_STOP);
+ } else {
+ mode = imx7ulp_get_mode();
+
+ if (mode == 3)
+ imx7ulp_set_lpm(ULP_PM_WAIT);
+ else
+ imx7ulp_set_lpm(ULP_PM_STOP);
+ }
cpu_do_idle();
diff --git a/arch/arm/mach-imx/pm-imx7ulp.c b/arch/arm/mach-imx/pm-imx7ulp.c
index 393faf1e8382..1410ccfc71bd 100644
--- a/arch/arm/mach-imx/pm-imx7ulp.c
+++ b/arch/arm/mach-imx/pm-imx7ulp.c
@@ -63,6 +63,16 @@ int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode)
return 0;
}
+u32 imx7ulp_get_mode(void)
+{
+ u32 mode;
+
+ mode = readl_relaxed(smc1_base + SMC_PMCTRL) & BM_PMCTRL_RUNM;
+ mode >>= BP_PMCTRL_RUNM;
+
+ return mode;
+}
+
void __init imx7ulp_pm_init(void)
{
struct device_node *np;
--
2.16.4
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^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode
2020-04-13 6:49 [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode peng.fan
` (3 preceding siblings ...)
2020-04-13 6:49 ` [PATCH V2 4/4] ARM: imx: cpuidle-imx7ulp: Stop mode disallowed when HSRUN peng.fan
@ 2020-04-14 13:44 ` Shawn Guo
2020-04-14 23:04 ` Peng Fan
4 siblings, 1 reply; 7+ messages in thread
From: Shawn Guo @ 2020-04-14 13:44 UTC (permalink / raw)
To: peng.fan
Cc: abel.vesa, Anson.Huang, sboyd, s.hauer, linux-kernel, robh+dt,
linux-imx, kernel, festevam, linux-arm-kernel
On Mon, Apr 13, 2020 at 02:49:04PM +0800, peng.fan@nxp.com wrote:
> From: Peng Fan <peng.fan@nxp.com>
>
> V2:
> Fix dt_bindings check
Confusing. The series posted on Mar. 16 was already numbered v3. Now,
it goes back to v2. You should at least have a note to explain how they
are related.
Shawn
>
> This is a splited part from V2:
> ARM: imx7ulp: add cpufreq using cpufreq-dt
> https://patchwork.kernel.org/cover/11390589/
> Nothing changed
>
>
> The original V2 patchset is to support i.MX7ULP cpufreq,
> still waiting the virtual clk being accepted. so to decouple,
> this patchset only takes the run mode part.
>
> Peng Fan (4):
> dt-bindings: fsl: add i.MX7ULP PMC binding doc
> ARM: dts: imx7ulp: add pmc node
> ARM: imx: imx7ulp: support HSRUN mode
> ARM: imx: cpuidle-imx7ulp: Stop mode disallowed when HSRUN
>
> .../bindings/arm/freescale/imx7ulp_pmc.yaml | 32 ++++++++++++++++++++++
> arch/arm/boot/dts/imx7ulp.dtsi | 10 +++++++
> arch/arm/mach-imx/common.h | 1 +
> arch/arm/mach-imx/cpuidle-imx7ulp.c | 14 ++++++++--
> arch/arm/mach-imx/pm-imx7ulp.c | 25 +++++++++++++++++
> 5 files changed, 79 insertions(+), 3 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/arm/freescale/imx7ulp_pmc.yaml
>
> --
> 2.16.4
>
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^ permalink raw reply [flat|nested] 7+ messages in thread* RE: [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode
2020-04-14 13:44 ` [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode Shawn Guo
@ 2020-04-14 23:04 ` Peng Fan
0 siblings, 0 replies; 7+ messages in thread
From: Peng Fan @ 2020-04-14 23:04 UTC (permalink / raw)
To: Shawn Guo
Cc: Abel Vesa, Anson Huang, sboyd@kernel.org, s.hauer@pengutronix.de,
linux-kernel@vger.kernel.org, robh+dt@kernel.org, dl-linux-imx,
kernel@pengutronix.de, festevam@gmail.com,
linux-arm-kernel@lists.infradead.org
> Subject: Re: [PATCH V2 0/4] ARM: imx7ulp: support HSRUN mode
>
> On Mon, Apr 13, 2020 at 02:49:04PM +0800, peng.fan@nxp.com wrote:
> > From: Peng Fan <peng.fan@nxp.com>
> >
> > V2:
> > Fix dt_bindings check
>
> Confusing. The series posted on Mar. 16 was already numbered v3. Now,
> it goes back to v2. You should at least have a note to explain how they are
> related.
Sorry, this should be v4. I format patch with wrong subject prefix.
Will post this patchset again with v4.
Thanks,
Peng.
>
> Shawn
>
> >
> > This is a splited part from V2:
> > ARM: imx7ulp: add cpufreq using cpufreq-dt
> > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatc
> >
> hwork.kernel.org%2Fcover%2F11390589%2F&data=02%7C01%7Cpeng.f
> an%40n
> >
> xp.com%7C5d5665f577bc4175d56108d7e079f573%7C686ea1d3bc2b4c6fa92
> cd99c5c
> >
> 301635%7C0%7C1%7C637224686727427611&sdata=LP0xeyGrCzZcR7U
> ruDnPqAFT
> > qzFgdj68hs41%2F5eiWrc%3D&reserved=0
> > Nothing changed
> >
> >
> > The original V2 patchset is to support i.MX7ULP cpufreq, still waiting
> > the virtual clk being accepted. so to decouple, this patchset only
> > takes the run mode part.
> >
> > Peng Fan (4):
> > dt-bindings: fsl: add i.MX7ULP PMC binding doc
> > ARM: dts: imx7ulp: add pmc node
> > ARM: imx: imx7ulp: support HSRUN mode
> > ARM: imx: cpuidle-imx7ulp: Stop mode disallowed when HSRUN
> >
> > .../bindings/arm/freescale/imx7ulp_pmc.yaml | 32
> ++++++++++++++++++++++
> > arch/arm/boot/dts/imx7ulp.dtsi | 10 +++++++
> > arch/arm/mach-imx/common.h | 1 +
> > arch/arm/mach-imx/cpuidle-imx7ulp.c | 14
> ++++++++--
> > arch/arm/mach-imx/pm-imx7ulp.c | 25
> +++++++++++++++++
> > 5 files changed, 79 insertions(+), 3 deletions(-) create mode 100644
> > Documentation/devicetree/bindings/arm/freescale/imx7ulp_pmc.yaml
> >
> > --
> > 2.16.4
> >
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^ permalink raw reply [flat|nested] 7+ messages in thread