[PATCH] ARM: dts: dra7-evm: add parallel NOR flash support
Pekon Gupta
pekon at ti.com
Wed Jul 23 03:58:50 PDT 2014
This patch adds support for parallel NOR device (S29GL512S10) present on J6-EVM.
The Flash device is connected to GPMC controller on chip-select[0] and accessed
as memory-mapped device. It has data-witdh=x16, capacity-64MBytes(512Mbits) and
is CFI compatible.
As multiple devices are share GPMC pins on this board, so following board
settings are required to detect NOR device:
SW5.1 (NAND_BOOTn) = OFF (logic-1)
SW5.2 (NOR_BOOTn) = ON (logic-0) /* Active-low */
SW5.3 (eMMC_BOOTn) = OFF (logic-1)
SW5.4 (QSPI_BOOTn) = OFF (logic-1)
Also to maintain NAND Boot functionality, following setting are kept as default
- NAND status="enabled"
- NOR status="disabled"
Signed-off-by: Pekon Gupta <pekon at ti.com>
---
/* Flash read/write access tested after enabling NOR sub-node in DT */
linux#> flash_erase /dev/mtd9 0 0
linux#> dd if=/dev/urandom of=/tmp/source.hex bs=1c count=2048
linux#> mtd_debug write /dev/mtd9 0x0 2048 /tmp/source.hex
linux#> mtd_debug read /dev/mtd9 0x0 2048 /tmp/destination.hex
linux#> diff /tmp/source.hex /tmp/destination.hex
arch/arm/boot/dts/dra7-evm.dts | 141 ++++++++++++++++++++++++++++++++++++++++-
1 file changed, 140 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index 4adc280..1ee9727 100644
--- a/arch/arm/boot/dts/dra7-evm.dts
+++ b/arch/arm/boot/dts/dra7-evm.dts
@@ -151,6 +151,66 @@
0xd0 (PIN_OUTPUT | MUX_MODE0) /* gpmc_be0n_cle */
>;
};
+
+ nor_flash_x16: nor_flash_x16 {
+ /* On DRA7 EVM, NOR_BOOTn comes from DIP switch
+ * So NOR flash requires following switch settings:
+ * SW5.1 (NAND_BOOTn) = OFF (logic-1)
+ * SW5.2 (NOR_BOOTn) = ON (logic-0) Active-low
+ * SW5.3 (eMMC_BOOTn) = OFF (logic-1)
+ * SW5.4 (QSPI_BOOTn) = OFF (logic-1)
+ */
+ pinctrl-single,pins = <
+ 0x00 (PIN_INPUT | MUX_MODE0) /* gpmc_ad0 */
+ 0x04 (PIN_INPUT | MUX_MODE0) /* gpmc_ad1 */
+ 0x08 (PIN_INPUT | MUX_MODE0) /* gpmc_ad2 */
+ 0x0c (PIN_INPUT | MUX_MODE0) /* gpmc_ad3 */
+ 0x10 (PIN_INPUT | MUX_MODE0) /* gpmc_ad4 */
+ 0x14 (PIN_INPUT | MUX_MODE0) /* gpmc_ad5 */
+ 0x18 (PIN_INPUT | MUX_MODE0) /* gpmc_ad6 */
+ 0x1c (PIN_INPUT | MUX_MODE0) /* gpmc_ad7 */
+ 0x20 (PIN_INPUT | MUX_MODE0) /* gpmc_ad8 */
+ 0x24 (PIN_INPUT | MUX_MODE0) /* gpmc_ad9 */
+ 0x28 (PIN_INPUT | MUX_MODE0) /* gpmc_ad10 */
+ 0x2c (PIN_INPUT | MUX_MODE0) /* gpmc_ad11 */
+ 0x30 (PIN_INPUT | MUX_MODE0) /* gpmc_ad12 */
+ 0x34 (PIN_INPUT | MUX_MODE0) /* gpmc_ad13 */
+ 0x38 (PIN_INPUT | MUX_MODE0) /* gpmc_ad14 */
+ 0x3c (PIN_INPUT | MUX_MODE0) /* gpmc_ad15 */
+ 0x40 (PIN_INPUT | MUX_MODE0) /* gpmc_a0 */
+ 0x44 (PIN_INPUT | MUX_MODE0) /* gpmc_a1 */
+ 0x48 (PIN_INPUT | MUX_MODE0) /* gpmc_a2 */
+ 0x4c (PIN_INPUT | MUX_MODE0) /* gpmc_a3 */
+ 0x50 (PIN_INPUT | MUX_MODE0) /* gpmc_a4 */
+ 0x54 (PIN_INPUT | MUX_MODE0) /* gpmc_a5 */
+ 0x58 (PIN_INPUT | MUX_MODE0) /* gpmc_a6 */
+ 0x5c (PIN_INPUT | MUX_MODE0) /* gpmc_a7 */
+ 0x60 (PIN_INPUT | MUX_MODE0) /* gpmc_a8 */
+ 0x64 (PIN_INPUT | MUX_MODE0) /* gpmc_a9 */
+ 0x68 (PIN_INPUT | MUX_MODE0) /* gpmc_a10 */
+ 0x6c (PIN_INPUT | MUX_MODE0) /* gpmc_a11 */
+ 0x70 (PIN_INPUT | MUX_MODE0) /* gpmc_a12 */
+ 0x74 (PIN_INPUT | MUX_MODE0) /* gpmc_a13 */
+ 0x78 (PIN_INPUT | MUX_MODE0) /* gpmc_a14 */
+ 0x7c (PIN_INPUT | MUX_MODE0) /* gpmc_a15 */
+ 0x80 (PIN_INPUT | MUX_MODE0) /* gpmc_a16 */
+ 0x84 (PIN_INPUT | MUX_MODE0) /* gpmc_a17 */
+ 0x88 (PIN_INPUT | MUX_MODE0) /* gpmc_a18 */
+ 0x8c (PIN_INPUT | MUX_MODE0) /* gpmc_a19 */
+ 0x90 (PIN_INPUT | MUX_MODE0) /* gpmc_a20 */
+ 0x94 (PIN_INPUT | MUX_MODE0) /* gpmc_a21 */
+ 0x98 (PIN_INPUT | MUX_MODE0) /* gpmc_a22 */
+ 0x9c (PIN_INPUT | MUX_MODE0) /* gpmc_a23 */
+ 0xa0 (PIN_INPUT | MUX_MODE0) /* gpmc_a24 */
+ 0xa4 (PIN_INPUT | MUX_MODE0) /* gpmc_a25 */
+ 0xd8 (PIN_INPUT | MUX_MODE0) /* gpmc_wait0 */
+ 0xcc (PIN_OUTPUT | MUX_MODE0) /* gpmc_wen */
+ 0xb4 (PIN_OUTPUT | MUX_MODE0) /* gpmc_csn0 */
+ 0xc4 (PIN_OUTPUT | MUX_MODE0) /* gpmc_advn_ale */
+ 0xc8 (PIN_OUTPUT | MUX_MODE0) /* gpmc_oen_ren */
+ 0xd0 (PIN_OUTPUT | MUX_MODE0) /* gpmc_be0n_cle */
+ >;
+ };
};
&i2c1 {
@@ -417,8 +477,9 @@
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&nand_flash_x16>;
- ranges = <0 0 0 0x01000000>; /* minimum GPMC partition = 16MB */
+ ranges = <0 0 0x08000000 0x04000000>; /* address offset=128MB, range=512Mb=64MB */
nand at 0,0 {
+ status = "okay";
reg = <0 0 4>; /* device IO registers */
ti,nand-ecc-opt = "bch8";
ti,elm-id = <&elm>;
@@ -494,4 +555,82 @@
reg = <0x00a00000 0x0f600000>;
};
};
+
+ nor at 0,0 {
+ status = "disabled";
+ compatible = "cfi-flash";
+ reg = <0 0 0x04000000>; /* device memory map = 64MB (actual capacity) */
+ /* generic bindings */
+ linux,mtd-name = "Spansion,S29GL512";
+ bank-width = <2>;
+ /* vendor specific bindings */
+ gpmc,device-width = <2>;
+ gpmc,sync-clk-ps = <0>;
+ gpmc,cs-on-ns = <0>;
+ gpmc,cs-rd-off-ns = <100>;
+ gpmc,cs-wr-off-ns = <100>;
+ gpmc,adv-on-ns = <10>;
+ gpmc,adv-rd-off-ns = <100>;
+ gpmc,adv-wr-off-ns = <100>;
+ gpmc,we-on-ns = <10>;
+ gpmc,we-off-ns = <100>;
+ gpmc,oe-on-ns = <10>;
+ gpmc,oe-off-ns = <100>;
+ gpmc,access-ns = <75>;
+ gpmc,rd-cycle-ns = <100>;
+ gpmc,wr-cycle-ns = <100>;
+ gpmc,page-burst-access-ns = <10>;
+ gpmc,cycle2cycle-samecsen;
+ gpmc,bus-turnaround-ns = <10>;
+ gpmc,cycle2cycle-delay-ns = <20>;
+ /* gpmc,clk-activation-ns = <0>; */
+ gpmc,wait-monitoring-ns = <0>;
+ gpmc,wr-access-ns = <75>;
+ gpmc,wr-data-mux-bus-ns = <100>;
+ /* MTD partition table */
+ /* All SPL-* partitions are sized to minimal length
+ * which can be independently programmable */
+ #address-cells = <1>;
+ #size-cells = <1>;
+ partition at 0x00000000 {
+ label = "NOR.SPL";
+ reg = <0x00000000 0x00040000>;
+ };
+ partition at 0x00040000 {
+ label = "NOR.SPL.backup1";
+ reg = <0x00040000 0x00040000>;
+ };
+ partition at 0x00080000 {
+ label = "NOR.SPL.backup2";
+ reg = <0x00080000 0x00040000>;
+ };
+ partition at 0x000c0000 {
+ label = "NOR.SPL.backup3";
+ reg = <0x000c0000 0x00040000>;
+ };
+ partition at 0x00100000 {
+ label = "NOR.u-boot-spl-os";
+ reg = <0x00100000 0x00080000>;
+ };
+ partition at 0x00180000 {
+ label = "NOR.u-boot";
+ reg = <0x00180000 0x00100000>;
+ };
+ partition at 0x00280000 {
+ label = "NOR.u-boot-env";
+ reg = <0x00280000 0x00040000>;
+ };
+ partition at 0x002c0000 {
+ label = "NOR.u-boot-env.backup1";
+ reg = <0x002c0000 0x00040000>;
+ };
+ partition at 0x00300000 {
+ label = "NOR.kernel";
+ reg = <0x00300000 0x00700000>;
+ };
+ partition at 0x00a00000 {
+ label = "NOR.file-system";
+ reg = <0x00a00000 0x00600000>;
+ };
+ };
};
--
1.8.5.1.163.gd7aced9
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