Add eMMC pinmux and mmc2 related bits. We keep the mmc2
controller disabled as it conflits with gpmc/NAND.
To enable emmc, simply set mmc2 controller node to "okay"
and set the gpmc node to "disabled" and change the
SelEMMCorNAND gpio-hog to output-high.
Signed-off-by: Roger Quadros <rogerq@xxxxxx>
---
arch/arm/boot/dts/am437x-gp-evm.dts | 49 +++++++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 3c59858..c7423ed 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -446,6 +446,36 @@
0x26c (PIN_OUTPUT | MUX_MODE9) /* spi2_cs0.gpio0_23 SEL_eMMCorNANDn */
>;
};
+
+ emmc_pins_default: emmc_pins_default {
+ pinctrl-single,pins = <
+ 0x00 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
+ 0x04 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
+ 0x08 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
+ 0x0c (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
+ 0x10 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad4.mmc1_dat4 */
+ 0x14 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad5.mmc1_dat5 */
+ 0x18 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad6.mmc1_dat6 */
+ 0x1c (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad7.mmc1_dat7 */
+ 0x80 (PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn1.mmc1_clk */
+ 0x84 (PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn2.mmc1_cmd */
+ >;
+ };
+
+ emmc_pins_sleep: emmc_pins_sleep {
+ pinctrl-single,pins = <
+ 0x00 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad0.gpio1_0 */
+ 0x04 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad1.gpio1_1 */
+ 0x08 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad2.gpio1_2 */
+ 0x0c (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad3.gpio1_3 */
+ 0x10 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad4.gpio1_4 */
+ 0x14 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad5.gpio1_5 */
+ 0x18 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad6.gpio1_6 */
+ 0x1c (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad7.gpio1_7 */
+ 0x80 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_csn1.gpio1_30 */
+ 0x84 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_csn2.gpio1_31 */
+ >;
+ };
};
&i2c0 {
@@ -651,6 +681,21 @@
cd-gpios = <&gpio0 6 GPIO_ACTIVE_HIGH>;
};
+/* eMMC sits on mmc2 */
+&mmc2 {
+ /*
+ * When enabling eMMC, disable GPMC/NAND and set
+ * SelEMMCorNAND to output-high
+ */
+ status = "disabled";
+ vmmc-supply = <&evm_v3_3d>;
+ bus-width = <8>;
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&emmc_pins_default>;
+ pinctrl-1 = <&emmc_pins_sleep>;
+ ti,non-removable;
+};
+
&mmc3 {
status = "okay";
/* these are on the crossbar and are outlined in the
@@ -731,6 +776,10 @@
};
&gpmc {
+ /*
+ * When enabling GPMC, disable eMMC and set
+ * SelEMMCorNAND to output-low
+ */
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&nand_flash_x8>;
--
2.1.4
--
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