ARM: dts: cm-t335: add support for NAND flash

Add pinmux configuration for NAND specific GPMC pins.
Add description for GPMC controller. Add child node for NAND flash
including CM-T335 specific partition table to GPMC node.
Enable error-location module (ELM).

Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Ilya Ledvich <ilya@compulab.co.il>
Signed-off-by: Uri Mashiach <uri.mashiach@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/am335x-cm-t335.dts b/arch/arm/boot/dts/am335x-cm-t335.dts
index 9fc2f01..57c8b03 100644 (file)
--- a/arch/arm/boot/dts/am335x-cm-t335.dts
+++ b/arch/arm/boot/dts/am335x-cm-t335.dts
@@ -62,6 +62,41 @@
                >;
        };
 
+       nandflash_pins: pinmux_nandflash_pins {
+               pinctrl-single,pins = <
+                       /* gpmc_ad0.gpmc_ad0 */
+                       AM33XX_IOPAD(0x800, PIN_INPUT_PULLUP | MUX_MODE0)
+                       /* gpmc_ad1.gpmc_ad1 */
+                       AM33XX_IOPAD(0x804, PIN_INPUT_PULLUP | MUX_MODE0)
+                       /* gpmc_ad2.gpmc_ad2 */
+                       AM33XX_IOPAD(0x808, PIN_INPUT_PULLUP | MUX_MODE0)
+                       /* gpmc_ad3.gpmc_ad3 */
+                       AM33XX_IOPAD(0x80c, PIN_INPUT_PULLUP | MUX_MODE0)
+                       /* gpmc_ad4.gpmc_ad4 */
+                       AM33XX_IOPAD(0x810, PIN_INPUT_PULLUP | MUX_MODE0)
+                       /* gpmc_ad5.gpmc_ad5 */
+                       AM33XX_IOPAD(0x814, PIN_INPUT_PULLUP | MUX_MODE0)
+                       /* gpmc_ad6.gpmc_ad6 */
+                       AM33XX_IOPAD(0x818, PIN_INPUT_PULLUP | MUX_MODE0)
+                       /* gpmc_ad7.gpmc_ad7 */
+                       AM33XX_IOPAD(0x81c, PIN_INPUT_PULLUP | MUX_MODE0)
+                       /* gpmc_wait0.gpmc_wait0 */
+                       AM33XX_IOPAD(0x870, PIN_INPUT_PULLUP | MUX_MODE0)
+                       /* gpmc_wpn.gpio0_30 */
+                       AM33XX_IOPAD(0x874, PIN_INPUT_PULLUP | MUX_MODE7)
+                       /* gpmc_csn0.gpmc_csn0  */
+                       AM33XX_IOPAD(0x87c, PIN_OUTPUT | MUX_MODE0)
+                       /* gpmc_advn_ale.gpmc_advn_ale */
+                       AM33XX_IOPAD(0x890, PIN_OUTPUT | MUX_MODE0)
+                       /* gpmc_oen_ren.gpmc_oen_ren */
+                       AM33XX_IOPAD(0x894, PIN_OUTPUT | MUX_MODE0)
+                       /* gpmc_wen.gpmc_wen */
+                       AM33XX_IOPAD(0x898, PIN_OUTPUT | MUX_MODE0)
+                       /* gpmc_ben0_cle.gpmc_ben0_cle */
+                       AM33XX_IOPAD(0x89c, PIN_OUTPUT | MUX_MODE0)
+               >;
+       };
+
        uart0_pins: pinmux_uart0_pins {
                pinctrl-single,pins = <
                        /* uart0_rxd.uart0_rxd */
@@ -97,3 +132,74 @@
                reg = <0x56>;
        };
 };
+
+&gpmc {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&nandflash_pins>;
+       ranges = <0 0 0x08000000 0x10000000>;   /* CS0: NAND */
+       nand@0,0 {
+               reg = <0 0 0>; /* CS0, offset 0 */
+               ti,nand-ecc-opt = "bch8";
+               ti,elm-id = <&elm>;
+               nand-bus-width = <8>;
+               gpmc,device-width = <1>;
+               gpmc,sync-clk-ps = <0>;
+               gpmc,cs-on-ns = <0>;
+               gpmc,cs-rd-off-ns = <44>;
+               gpmc,cs-wr-off-ns = <44>;
+               gpmc,adv-on-ns = <6>;
+               gpmc,adv-rd-off-ns = <34>;
+               gpmc,adv-wr-off-ns = <44>;
+               gpmc,we-on-ns = <0>;
+               gpmc,we-off-ns = <40>;
+               gpmc,oe-on-ns = <0>;
+               gpmc,oe-off-ns = <54>;
+               gpmc,access-ns = <64>;
+               gpmc,rd-cycle-ns = <82>;
+               gpmc,wr-cycle-ns = <82>;
+               gpmc,wait-on-read = "true";
+               gpmc,wait-on-write = "true";
+               gpmc,bus-turnaround-ns = <0>;
+               gpmc,cycle2cycle-delay-ns = <0>;
+               gpmc,clk-activation-ns = <0>;
+               gpmc,wait-monitoring-ns = <0>;
+               gpmc,wr-access-ns = <40>;
+               gpmc,wr-data-mux-bus-ns = <0>;
+               /* MTD partition table */
+               #address-cells = <1>;
+               #size-cells = <1>;
+               partition@0 {
+                       label = "spl";
+                       reg = <0x00000000 0x00200000>;
+               };
+               partition@1 {
+                       label = "uboot";
+                       reg = <0x00200000 0x00100000>;
+               };
+               partition@2 {
+                       label = "uboot environment";
+                       reg = <0x00300000 0x00100000>;
+               };
+               partition@3 {
+                       label = "dtb";
+                       reg = <0x00400000 0x00100000>;
+               };
+               partition@4 {
+                       label = "splash";
+                       reg = <0x00500000 0x00400000>;
+               };
+               partition@5 {
+                       label = "linux";
+                       reg = <0x00900000 0x00600000>;
+               };
+               partition@6 {
+                       label = "rootfs";
+                       reg = <0x00F00000 0>;
+               };
+       };
+};
+
+&elm {
+       status = "okay";
+};