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MIPS: SEAD3: Probe parallel flash via DT 

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>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14053/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Paul Burton 2016-08-26 15:17:40 +01:00 committed by Ralf Baechle
parent 63c8d90ca9
commit 3aefc6554a
2 changed files with 24 additions and 37 deletions
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24
arch/mips/boot/dts/mti/sead3.dts
View File

@ -69,6 +69,30 @@
has-transaction-translator; 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 */ /* UART connected to FTDI & miniUSB socket */
uart0: uart@1f000900 { uart0: uart@1f000900 {
compatible = "ns16550a"; compatible = "ns16550a";

37
arch/mips/mti-sead3/sead3-platform.c
View File

@ -8,44 +8,8 @@
#include <linux/dma-mapping.h> #include <linux/dma-mapping.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/leds.h> #include <linux/leds.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.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) \ #define LEDFLAGS(bits, shift) \
((bits << 8) | (shift << 8)) ((bits << 8) | (shift << 8))
@ -113,7 +77,6 @@ static struct platform_device sead3_led_device = {
}; };
static struct platform_device *sead3_platform_devices[] __initdata = { static struct platform_device *sead3_platform_devices[] __initdata = {
&sead3_flash,
&pled_device, &pled_device,
&fled_device, &fled_device,
&sead3_led_device, &sead3_led_device,