Commit 55df2079 authored Sep 13, 2020 by Fabio Estevam Committed by Shawn Guo Sep 22, 2020

ARM: dts: imx6q-logicpd: Use GPIO chipselect



Using the native SPI chipselect on i.MX6 is known to be problematic.

Doing it on a imx6q-sabresd causes the SPI NOR probe to fail:

[    5.388704] spi-nor spi0.0: unrecognized JEDEC id bytes: 00 00 00 00 00 00

Use the GPIO chipselect to avoid such problem.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

parent dd1d4def

arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi

+2 −1

Original line number	Diff line number	Diff line
		@@ -212,6 +212,7 @@
		&ecspi1 {
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_ecspi1>;
		cs-gpios = <&gpio4 9 GPIO_ACTIVE_LOW>;
		status = "disabled";
		};

		@@ -383,7 +384,7 @@
		MX6QDL_PAD_KEY_COL0__ECSPI1_SCLK 0x100b1
		MX6QDL_PAD_KEY_ROW0__ECSPI1_MOSI 0x100b1
		MX6QDL_PAD_KEY_COL1__ECSPI1_MISO 0x100b1
		MX6QDL_PAD_KEY_ROW1__ECSPI1_SS0 0x100b1
		MX6QDL_PAD_KEY_ROW1__GPIO4_IO09 0x1b0b0
		>;
		};

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