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Date: Thu, 2 May 2013 09:15:15 +0000
From: "Hiremath, Vaibhav" <hvaibhav@...com>
To: "Gupta, Pekon" <pekon@...com>,
"Cousson, Benoit" <b-cousson@...com>,
"tony@...mide.com" <tony@...mide.com>,
"linux@....linux.org.uk" <linux@....linux.org.uk>
CC: "Philip, Avinash" <avinashphilip@...com>,
"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
"devicetree-discuss@...ts.ozlabs.org"
<devicetree-discuss@...ts.ozlabs.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"Nori, Sekhar" <nsekhar@...com>,
"Hebbar, Gururaja" <gururaja.hebbar@...com>,
"zonque@...il.com" <zonque@...il.com>,
"jacmet@...site.dk" <jacmet@...site.dk>
Subject: RE: [v3, 3/3] ARM: dts: AM33XX: Add NAND flash device tree data to
am335x-evm
> -----Original Message-----
> From: Gupta, Pekon
> Sent: Thursday, May 02, 2013 2:18 PM
> To: Gupta, Pekon; Cousson, Benoit; tony@...mide.com;
> linux@....linux.org.uk
> Cc: Philip, Avinash; linux-omap@...r.kernel.org; devicetree-
> discuss@...ts.ozlabs.org; linux-arm-kernel@...ts.infradead.org; linux-
> kernel@...r.kernel.org; Nori, Sekhar; Hebbar, Gururaja; Hiremath,
> Vaibhav; zonque@...il.com; jacmet@...site.dk
> Subject: [v3, 3/3] ARM: dts: AM33XX: Add NAND flash device tree data to
> am335x-evm
>
> From: avinash philip <avinashphilip@...com>
>
> NAND flash connected in am335x-evm on GPMC controller. This patch adds
> device tree node in am3355-evm with GPMC contoller timing for NAND
> flash
> interface, NAND partition table, ECC scheme, elm handle id.
>
> Signed-off-by: Philip Avinash <avinashphilip@...com>
> Signed-off-by: Gupta, Pekon <pekon@...com>
> ---
> arch/arm/boot/dts/am335x-evm.dts | 95
> ++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 95 insertions(+)
>
> diff --git a/arch/arm/boot/dts/am335x-evm.dts
> b/arch/arm/boot/dts/am335x-evm.dts
> index d649644..07761fd 100644
> --- a/arch/arm/boot/dts/am335x-evm.dts
> +++ b/arch/arm/boot/dts/am335x-evm.dts
> @@ -44,6 +44,26 @@
> 0x154 0x27 /* spi0_d0.gpio0_3, INPUT | MODE7
> */
> >;
> };
> +
> + nandflash_pins_s0: nandflash_pins_s0 {
> + pinctrl-single,pins = <
> + 0x0 0x30 /* gpmc_ad0.gpmc_ad0, INPUT |
> PULLUP | MODE0 */
> + 0x4 0x30 /* gpmc_ad1.gpmc_ad1, INPUT |
> PULLUP | MODE0 */
> + 0x8 0x30 /* gpmc_ad2.gpmc_ad2, INPUT |
> PULLUP | MODE0 */
> + 0xc 0x30 /* gpmc_ad3.gpmc_ad3, INPUT |
> PULLUP | MODE0 */
> + 0x10 0x30 /* gpmc_ad4.gpmc_ad4, INPUT |
> PULLUP | MODE0 */
> + 0x14 0x30 /* gpmc_ad5.gpmc_ad5, INPUT |
> PULLUP | MODE0 */
> + 0x18 0x30 /* gpmc_ad6.gpmc_ad6, INPUT |
> PULLUP | MODE0 */
> + 0x1c 0x30 /* gpmc_ad7.gpmc_ad7, INPUT |
> PULLUP | MODE0 */
> + 0x70 0x30 /* gpmc_wait0.gpmc_wait0, INPUT |
> PULLUP | MODE0 */
> + 0x74 0x37 /* gpmc_wpn.gpio0_30, INPUT |
> PULLUP | MODE7 */
> + 0x7c 0x8 /* gpmc_csn0.gpmc_csn0, PULL DISA
> */
> + 0x90 0x8 /* gpmc_advn_ale.gpmc_advn_ale,
> PULL DISA */
> + 0x94 0x8 /* gpmc_oen_ren.gpmc_oen_ren, PULL
> DISA */
> + 0x98 0x8 /* gpmc_wen.gpmc_wen, PULL DISA */
> + 0x9c 0x8 /* gpmc_be0n_cle.gpmc_be0n_cle,
> PULL DISA */
> + >;
> + };
> };
>
> ocp {
> @@ -102,6 +122,81 @@
> reg = <0x48>;
> };
> };
> +
> + elm: elm@...80000 {
> + status = "okay";
> + };
> +
> + gpmc: gpmc@...00000 {
> + status = "okay";
> + pinctrl-0 = <&nandflash_pins_s0>;
It would be good, if you label this pin configuration with 'default' name,
as below -
pinctrl-names = "default";
Thanks,
Vaibhav
> + ranges = <0 0 0x08000000 0x10000000>; /* CS0:
> NAND */
> + nand@0,0 {
> + reg = <0 0 0>; /* CS0, offset 0 */
> + nand-bus-width = <8>;
> + ti,nand-ecc-opt = "bch8";
> +
> + gpmc,sync-clk = <0>;
> + gpmc,cs-on = <0>;
> + gpmc,cs-rd-off = <44>;
> + gpmc,cs-wr-off = <44>;
> + gpmc,adv-on = <6>;
> + gpmc,adv-rd-off = <34>;
> + gpmc,adv-wr-off = <44>;
> + gpmc,we-off = <40>;
> + gpmc,oe-off = <54>;
> + gpmc,access = <64>;
> + gpmc,rd-cycle = <82>;
> + gpmc,wr-cycle = <82>;
> + gpmc,wr-access = <40>;
> + gpmc,wr-data-mux-bus = <0>;
> +
> + #address-cells = <1>;
> + #size-cells = <1>;
> + elm_id = <&elm>;
> +
> + /* MTD partition table */
> + partition@0 {
> + label = "SPL1";
> + reg = <0x00000000 0x000020000>;
> + };
> +
> + partition@1 {
> + label = "SPL2";
> + reg = <0x00020000 0x00020000>;
> + };
> +
> + partition@2 {
> + label = "SPL3";
> + reg = <0x00040000 0x00020000>;
> + };
> +
> + partition@3 {
> + label = "SPL4";
> + reg = <0x00060000 0x00020000>;
> + };
> +
> + partition@4 {
> + label = "U-boot";
> + reg = <0x00080000 0x001e0000>;
> + };
> +
> + partition@5 {
> + label = "environment";
> + reg = <0x00260000 0x00020000>;
> + };
> +
> + partition@6 {
> + label = "Kernel";
> + reg = <0x00280000 0x00500000>;
> + };
> +
> + partition@7 {
> + label = "File-System";
> + reg = <0x00780000 0x0F880000>;
> + };
> + };
> + };
> };
>
> vbat: fixedregulator@0 {
> --
> 1.8.1
--
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