ARM: orion5x: use DT to describe NOR on edmini_v2

This commit converts the already partially DT-converted edmini_v2
platform to use the Device Tree for NOR flash, using the Device Bus.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Link: https://lkml.kernel.org/r/1398202002-28530-32-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

2 files changed, 42 insertions, 63 deletions

diff --git a/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts b/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts
index f0f2bcc68150..1ecddbe655e1 100644
--- a/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts
+++ b/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts
@@ -28,7 +28,8 @@
 
         soc {
                 ranges = <MBUS_ID(0xf0, 0x01) 0 0xf1000000 0x100000>,
-                         <MBUS_ID(0x09, 0x00) 0 0xf2200000 0x800>;
+                         <MBUS_ID(0x09, 0x00) 0 0xf2200000 0x800>,
+                         <MBUS_ID(0x01, 0x0f) 0 0xfff80000 0x80000>;
         };
 
         gpio-keys {
@@ -56,6 +57,46 @@
         };
 };
 
+&devbus_bootcs {
+        status = "okay";
+
+        /* Read parameters */
+        devbus,bus-width    = <8>;
+        devbus,turn-off-ps  = <90000>;
+        devbus,badr-skew-ps = <0>;
+        devbus,acc-first-ps = <186000>;
+        devbus,acc-next-ps  = <186000>;
+
+        /* Write parameters */
+        devbus,wr-high-ps  = <90000>;
+        devbus,wr-low-ps   = <90000>;
+        devbus,ale-wr-ps   = <90000>;
+
+        /*
+         * Currently the MTD code does not recognize the MX29LV400CBCT
+         * as a bottom-type device. This could cause risks of
+         * accidentally erasing critical flash sectors. We thus define
+         * a single, write-protected partition covering the whole
+         * flash.  TODO: once the flash part TOP/BOTTOM detection
+         * issue is sorted out in the MTD code, break this into at
+         * least three partitions: 'u-boot code', 'u-boot environment'
+         * and 'whatever is left'.
+         */
+        flash@0 {
+                compatible = "cfi-flash";
+                reg = <0 0x80000>;
+                bank-width = <1>;
+                #address-cells = <1>;
+                #size-cells = <1>;
+
+                partition@0 {
+                        label = "Full512Kb";
+                        reg = <0 0x80000>;
+                        read-only;
+                };
+        };
+};
+
 &ehci0 {
         status = "okay";
 };
diff --git a/arch/arm/mach-orion5x/edmini_v2-setup.c b/arch/arm/mach-orion5x/edmini_v2-setup.c
index 2eebc0c345d8..6bef2d50e16d 100644
--- a/arch/arm/mach-orion5x/edmini_v2-setup.c
+++ b/arch/arm/mach-orion5x/edmini_v2-setup.c
@@ -42,74 +42,12 @@
  * EDMINI_V2 Info
  ****************************************************************************/
 
-/*
- * 512KB NOR flash Device bus boot chip select
- */
-
-#define EDMINI_V2_NOR_BOOT_BASE         0xfff80000
-#define EDMINI_V2_NOR_BOOT_SIZE         SZ_512K
-
-/*****************************************************************************
- * 512KB NOR Flash on BOOT Device
- ****************************************************************************/
-
-/*
- * Currently the MTD code does not recognize the MX29LV400CBCT as a bottom
- * -type device. This could cause risks of accidentally erasing critical
- * flash sectors. We thus define a single, write-protected partition covering
- * the whole flash.
- * TODO: once the flash part TOP/BOTTOM detection issue is sorted out in the MTD
- * code, break this into at least three partitions: 'u-boot code', 'u-boot
- * environment' and 'whatever is left'.
- */
-
-static struct mtd_partition edmini_v2_partitions[] = {
-        {
-                .name           = "Full512kb",
-                .size           = 0x00080000,
-                .offset         = 0x00000000,
-                .mask_flags     = MTD_WRITEABLE,
-        },
-};
-
-static struct physmap_flash_data edmini_v2_nor_flash_data = {
-        .width          = 1,
-        .parts          = edmini_v2_partitions,
-        .nr_parts       = ARRAY_SIZE(edmini_v2_partitions),
-};
-
-static struct resource edmini_v2_nor_flash_resource = {
-        .flags                  = IORESOURCE_MEM,
-        .start                  = EDMINI_V2_NOR_BOOT_BASE,
-        .end                    = EDMINI_V2_NOR_BOOT_BASE
-                + EDMINI_V2_NOR_BOOT_SIZE - 1,
-};
-
-static struct platform_device edmini_v2_nor_flash = {
-        .name                   = "physmap-flash",
-        .id                     = 0,
-        .dev            = {
-                .platform_data  = &edmini_v2_nor_flash_data,
-        },
-        .num_resources          = 1,
-        .resource               = &edmini_v2_nor_flash_resource,
-};
-
 /*****************************************************************************
  * General Setup
  ****************************************************************************/
 
 void __init edmini_v2_init(void)
 {
-        /*
-         * Configure peripherals.
-         */
-        mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
-                                    ORION_MBUS_DEVBUS_BOOT_ATTR,
-                                    EDMINI_V2_NOR_BOOT_BASE,
-                                    EDMINI_V2_NOR_BOOT_SIZE);
-        platform_device_register(&edmini_v2_nor_flash);
-
         pr_notice("edmini_v2: USB device port, flash write and power-off "
                   "are not yet supported.\n");
 }