From: Marek Vasut <marex@denx.de>
Date: Sat, 23 Oct 2021 18:33:33 +0000 (+0200)
Subject: ARM: dts: stm32: Drop nWP GPIO hog on DHSOM
X-Git-Url: http://git.dujemihanovic.xyz/posts?a=commitdiff_plain;h=eb319d8795b60dde4032786385c6e37a96accd54;p=u-boot.git

ARM: dts: stm32: Drop nWP GPIO hog on DHSOM

The nWP GPIO hog was used to unlock the SPI NOR write protect when U-Boot
used to operate the SPI NOR in 1-1-1 mode. Now that the SPI NOR is operated
in 1-1-4 mode, the hog has adverse effects and causes transfer corruption,
since the hogged pin is also the IO2 pin. Remove the hogs.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
---

diff --git a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
index 11bc247065..71b0486f02 100644
--- a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
@@ -50,15 +50,6 @@
 	};
 };
 
-&gpiof {
-	snor-nwp {
-		gpio-hog;
-		gpios = <7 0>;
-		output-high;
-		line-name = "spi-nor-nwp";
-	};
-};
-
 &i2c4 {
 	u-boot,dm-pre-reloc;
 };
diff --git a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
index 9d3db20876..502cd95da0 100644
--- a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
@@ -25,15 +25,6 @@
 	u-boot,dm-spl;
 };
 
-&gpiof {
-	snor-nwp {
-		gpio-hog;
-		gpios = <7 0>;
-		output-high;
-		line-name = "spi-nor-nwp";
-	};
-};
-
 &i2c4 {
 	u-boot,dm-pre-reloc;
 };