Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 50336f51 authored by Roger Quadros's avatar Roger Quadros Committed by Tony Lindgren
Browse files

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: default avatarRoger Quadros <rogerq@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 92814c4a

arch/arm/boot/dts/am437x-gp-evm.dts

+22 −1
Original line number Diff line number Diff line
@@ -231,7 +231,6 @@ 


	nand_flash_x8: nand_flash_x8 {

		pinctrl-single,pins = <

			0x26c(PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* spi2_cs0.gpio/eMMCorNANDsel */

			0x0  (PIN_INPUT  | MUX_MODE0)	/* gpmc_ad0.gpmc_ad0 */

			0x4  (PIN_INPUT  | MUX_MODE0)	/* gpmc_ad1.gpmc_ad1 */

			0x8  (PIN_INPUT  | MUX_MODE0)	/* gpmc_ad2.gpmc_ad2 */
@@ -441,6 +440,12 @@ 
			0x144 (PIN_INPUT_PULLDOWN | MUX_MODE7)

		>;

	};



	gpio0_pins: gpio0_pins {

		pinctrl-single,pins = <

			0x26c (PIN_OUTPUT | MUX_MODE9) /* spi2_cs0.gpio0_23 SEL_eMMCorNANDn */

		>;

	};

};



&i2c0 {
@@ -587,7 +592,23 @@ 
};



&gpio0 {

	pinctrl-names = "default";

	pinctrl-0 = <&gpio0_pins>;

	status = "okay";



	p23 {

		gpio-hog;

		gpios = <23 GPIO_ACTIVE_HIGH>;

		/* SelEMMCorNAND selects between eMMC and NAND:

		 * Low: NAND

		 * High: eMMC

		 * When changing this line make sure the newly

		 * selected device node is enabled and the previously

		 * selected device node is disabled.

		 */

		output-low;

		line-name = "SelEMMCorNAND";

	};

};



&gpio1 {