[PATCH v2 08/19] SEAD3: Probe parallel flash via DT

Paul Burton
2016-08-26T14:17:40Z

Probe the system parallel flash using device tree rather than platform
code, in order to reduce the amount of the latter.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>

---

Changes in v2:
- Provide bank-width
- Move partitions beneath partitions node
- s/pflash/flash/

arch/mips/boot/dts/mti/sead3.dts | 24 +++++++++++++++++++++++
arch/mips/mti-sead3/sead3-platform.c | 37 ------------------------------------
2 files changed, 24 insertions(+), 37 deletions(-)

diff --git a/arch/mips/boot/dts/mti/sead3.dts b/arch/mips/boot/dts/mti/sead3.dts
index 49f57c2..8844cc0 100644
--- a/arch/mips/boot/dts/mti/sead3.dts
+++ b/arch/mips/boot/dts/mti/sead3.dts
@@ -69,6 +69,30 @@
has-transaction-translator;
};

+ flash@1c000000 {
+ compatible = "intel,28f128j3", "cfi-flash";
+ reg = <0x1c000000 0x2000000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ bank-width = <4>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ user-fs@0 {
+ label = "User FS";
+ reg = <0x0 0x1fc0000>;
+ };
+
+ board-config@3e0000 {
+ label = "Board Config";
+ reg = <0x1fc0000 0x40000>;
+ };
+ };
+ };
+
/* UART connected to FTDI & miniUSB socket */
uart0: uart@1f000900 {
compatible = "ns16550a";
diff --git a/arch/mips/mti-sead3/sead3-platform.c b/arch/mips/mti-sead3/sead3-platform.c
index 21047b5..5c1f42a 100644
--- a/arch/mips/mti-sead3/sead3-platform.c
+++ b/arch/mips/mti-sead3/sead3-platform.c
@@ -8,44 +8,8 @@
#include <linux/dma-mapping.h>
#include <linux/init.h>
#include <linux/leds.h>
-#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>

-static struct mtd_partition sead3_mtd_partitions[] = {
- {
- .name = "User FS",
- .offset = 0x00000000,
- .size = 0x01fc0000,
- }, {
- .name = "Board Config",
- .offset = 0x01fc0000,
- .size = 0x00040000,
- .mask_flags = MTD_WRITEABLE
- },
-};
-
-static struct physmap_flash_data sead3_flash_data = {
- .width = 4,
- .nr_parts = ARRAY_SIZE(sead3_mtd_partitions),
- .parts = sead3_mtd_partitions
-};
-
-static struct resource sead3_flash_resource = {
- .start = 0x1c000000,
- .end = 0x1dffffff,
- .flags = IORESOURCE_MEM
-};
-
-static struct platform_device sead3_flash = {
- .name = "physmap-flash",
- .id = 0,
- .dev = {
- .platform_data = &sead3_flash_data,
- },
- .num_resources = 1,
- .resource = &sead3_flash_resource,
-};
-
#define LEDFLAGS(bits, shift) \
((bits << 8) | (shift << 8))

@@ -113,7 +77,6 @@ static struct platform_device sead3_led_device = {
};

static struct platform_device *sead3_platform_devices[] __initdata = {
- &sead3_flash,
&pled_device,
&fled_device,
&sead3_led_device,
--
2.9.3