[PATCH v2 1/2] powerpc: prpmc2800 - Add MTD support
From: Mark A. Greer <hidden>
Date: 2007-10-26 02:19:15
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
From: Mark A. Greer <redacted> Create necessary device nodes so that the MTD subsystem recognizes the MTD entries in the prpmc2800's DTS file. Also bring MTD section of the prpmc2800's DTS file up to the current DTS specification. Signed-off-by: Mark A. Greer <redacted> --- With Stephen's comments addressed. Much nicer. Thanks again, Stephen. arch/powerpc/boot/dts/prpmc2800.dts | 39 +++++++++++---- arch/powerpc/platforms/embedded6xx/prpmc2800.c | 12 ++++ 2 files changed, 41 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/boot/dts/prpmc2800.dts b/arch/powerpc/boot/dts/prpmc2800.dts
index 297dfa5..24944ca 100644
--- a/arch/powerpc/boot/dts/prpmc2800.dts
+++ b/arch/powerpc/boot/dts/prpmc2800.dts@@ -55,17 +55,36 @@ f2000000 f2000000 00040000>; /* Integrated SRAM */ flash@a0000000 { - device_type = "rom"; - compatible = "direct-mapped"; - reg = <a0000000 4000000>; /* Default (64MB) */ - probe-type = "CFI"; + compatible = "cfi-flash"; + reg = <a0000000 04000000>; bank-width = <4>; - partitions = <00000000 00100000 /* RO */ - 00100000 00040001 /* RW */ - 00140000 00400000 /* RO */ - 00540000 039c0000 /* RO */ - 03f00000 00100000>; /* RO */ - partition-names = "FW Image A", "FW Config Data", "Kernel Image", "Filesystem", "FW Image B"; + device-width = <2>; + #address-cells = <1>; + #size-cells = <1>; + fw@0 { + label = "FW Image A"; + reg = <00000000 00100000>; + read-only; + }; + cfg@100000 { + label = "FW Config Data"; /* RW */ + reg = <00100000 00040000>; + }; + kernel@140000 { + label = "Kernel Image"; + reg = <00140000 00400000>; + read-only; + }; + fs@540000 { + label = "Filesystem"; + reg = <00540000 039c0000>; + read-only; + }; + fw@3f00000 { + label = "FW Image B"; + reg = <03f00000 00100000>; + read-only; + }; }; mdio {
diff --git a/arch/powerpc/platforms/embedded6xx/prpmc2800.c b/arch/powerpc/platforms/embedded6xx/prpmc2800.c
index e484cac..2506f38 100644
--- a/arch/powerpc/platforms/embedded6xx/prpmc2800.c
+++ b/arch/powerpc/platforms/embedded6xx/prpmc2800.c@@ -14,6 +14,7 @@ #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/seq_file.h> +#include <linux/of_platform.h> #include <asm/machdep.h> #include <asm/prom.h>
@@ -68,6 +69,17 @@ static void __init prpmc2800_setup_arch(void) printk("Motorola %s\n", prpmc2800_platform_name); } +static int __init prpmc2800_register_mtd(void) +{ + struct device_node *np; + + for_each_compatible_node(np, NULL, "cfi-flash") + of_platform_device_create(np, NULL, NULL); + + return 0; +} +device_initcall(prpmc2800_register_mtd); + static void prpmc2800_reset_board(void) { u32 temp;