ARM: dts: am437x-gp-evm: Add gpio-hog for configuring eMMC/NAND driver
On this board either eMMC or NAND can work based on the level of spi2_cs0.gpio0_23. Add a gpio-hog to enable configuration of this pin in the device tree. Move pinmux for spi2_cs0 (SEL_eMMCorNANDn) out of NAND node into gpio0 so it is initialized with gpio0. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
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@ -231,7 +231,6 @@
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nand_flash_x8: nand_flash_x8 {
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pinctrl-single,pins = <
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0x26c(PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* spi2_cs0.gpio/eMMCorNANDsel */
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0x0 (PIN_INPUT | MUX_MODE0) /* gpmc_ad0.gpmc_ad0 */
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0x4 (PIN_INPUT | MUX_MODE0) /* gpmc_ad1.gpmc_ad1 */
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0x8 (PIN_INPUT | MUX_MODE0) /* gpmc_ad2.gpmc_ad2 */
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@ -441,6 +440,12 @@
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0x144 (PIN_INPUT_PULLDOWN | MUX_MODE7)
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>;
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};
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gpio0_pins: gpio0_pins {
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pinctrl-single,pins = <
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0x26c (PIN_OUTPUT | MUX_MODE9) /* spi2_cs0.gpio0_23 SEL_eMMCorNANDn */
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>;
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};
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};
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&i2c0 {
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@ -587,7 +592,23 @@
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};
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&gpio0 {
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pinctrl-names = "default";
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pinctrl-0 = <&gpio0_pins>;
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status = "okay";
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p23 {
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gpio-hog;
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gpios = <23 GPIO_ACTIVE_HIGH>;
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/* SelEMMCorNAND selects between eMMC and NAND:
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* Low: NAND
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* High: eMMC
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* When changing this line make sure the newly
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* selected device node is enabled and the previously
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* selected device node is disabled.
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*/
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output-low;
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line-name = "SelEMMCorNAND";
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};
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};
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&gpio1 {
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