From: Fabio Estevam <festevam@gmail.com>
To: shawnguo@kernel.org
Cc: Fabio Estevam <festevam@gmail.com>,
aford173@gmail.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] ARM: dts: imx6q-logicpd: Use GPIO chipselect
Date: Sun, 13 Sep 2020 13:29:13 -0300 [thread overview]
Message-ID: <20200913162913.22693-4-festevam@gmail.com> (raw)
In-Reply-To: <20200913162913.22693-1-festevam@gmail.com>
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>
---
arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
index 9e027b9a5f91..665d63765cdc 100644
--- a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
+++ b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
@@ -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
>;
};
--
2.17.1
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prev parent reply other threads:[~2020-09-13 16:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-13 16:29 [PATCH 1/4] ARM: dts: imx6q-logicpd: Add a specific board compatible string Fabio Estevam
2020-09-13 16:29 ` [PATCH 2/4] dt-bindings: arm: fsl: Add an entry for the i.MX6 LogicPD board Fabio Estevam
2020-09-13 16:29 ` [PATCH 3/4] ARM: imx: dts: Add an entry for imx6q-logicpd.dtb Fabio Estevam
2020-09-22 2:14 ` Shawn Guo
2020-09-13 16:29 ` Fabio Estevam [this message]
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