ARM: nomadik: add FSMC NAND

This adds the FSMC NAND driver and flash partitions to the Nomadik
device tree.

The only compatible string accepted by this driver is currently
"st,spear600-fsmc-nand" which is inappropriate for this system, so
this patch adds the compatible value "stericsson,fsmc-nand" as
well.

Cc: linux-mtd@vger.kernel.org
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

2 files changed, 53 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
index 88fb98f910cf..c73df370373b 100644
--- a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
+++ b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
@@ -35,6 +35,44 @@
                 interrupts = <5>;
         };
 
+        /* A NAND flash of 128 MiB */
+        fsmc: flash@40000000 {
+                compatible = "stericsson,fsmc-nand";
+                #address-cells = <1>;
+                #size-cells = <1>;
+                reg = <0x10100000 0x1000>,      /* FSMC Register*/
+                        <0x40000000 0x2000>,    /* NAND Base DATA */
+                        <0x41000000 0x2000>,    /* NAND Base ADDR */
+                        <0x40800000 0x2000>;    /* NAND Base CMD */
+                reg-names = "fsmc_regs", "nand_data", "nand_addr", "nand_cmd";
+                status = "okay";
+
+                partition@0 {
+                label = "X-Loader(NAND)";
+                        reg = <0x0 0x40000>;
+                };
+                partition@40000 {
+                        label = "MemInit(NAND)";
+                        reg = <0x40000 0x40000>;
+                };
+                partition@80000 {
+                        label = "BootLoader(NAND)";
+                        reg = <0x80000 0x200000>;
+                };
+                partition@280000 {
+                        label = "Kernel zImage(NAND)";
+                        reg = <0x280000 0x300000>;
+                };
+                partition@580000 {
+                        label = "Root Filesystem(NAND)";
+                        reg = <0x580000 0x1600000>;
+                };
+                partition@1b80000 {
+                        label = "User Filesystem(NAND)";
+                        reg = <0x1b80000 0x6480000>;
+                };
+        };
+
         amba {
                 compatible = "arm,amba-bus";
                 #address-cells = <1>;
diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c
index 8d071d2769b5..a3894ca45bb8 100644
--- a/arch/arm/mach-nomadik/cpu-8815.c
+++ b/arch/arm/mach-nomadik/cpu-8815.c
@@ -33,6 +33,7 @@
 #include <linux/of_irq.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
+#include <linux/mtd/fsmc.h>
 
 #include <mach/hardware.h>
 #include <mach/irqs.h>
@@ -249,6 +250,17 @@ static void __init cpu8815_timer_init_of(void)
         nmdk_timer_init(base, irq);
 }
 
+static struct fsmc_nand_timings cpu8815_nand_timings = {
+        .thiz   = 0,
+        .thold  = 0x10,
+        .twait  = 0x0A,
+        .tset   = 0,
+};
+
+static struct fsmc_nand_platform_data cpu8815_nand_data = {
+        .nand_timings = &cpu8815_nand_timings,
+};
+
 /* These are mostly to get the right device names for the clock lookups */
 static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = {
         OF_DEV_AUXDATA("arm,primecell", NOMADIK_UART0_BASE,
@@ -259,6 +271,9 @@ static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = {
                 "rng", NULL),
         OF_DEV_AUXDATA("arm,primecell", NOMADIK_RTC_BASE,
                 "rtc-pl031", NULL),
+        OF_DEV_AUXDATA("stericsson,fsmc-nand", NOMADIK_FSMC_BASE,
+                "fsmc-nand", &cpu8815_nand_data),
+
         { /* sentinel */ },
 };