From db51d608ff6901336d2c13d732da4ee0871acc50 Mon Sep 17 00:00:00 2001
From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Date: Sun, 2 Sep 2018 12:08:54 +0200
Subject: [PATCH] ARM: tegra: colibri_t20: add gpio hogs for gmi_wr_n buffers

Add GPIO hogs for GMI_WR_N buffers:
- tri-stating GMI_WR_N on SODIMM pin 99 nPWE
- not tri-stating GMI_WR_N on SODIMM pin 93 RDnWR

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 arch/arm/boot/dts/tegra20-colibri.dtsi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/tegra20-colibri.dtsi b/arch/arm/boot/dts/tegra20-colibri.dtsi
index 281e0dd115652..aba56b447bcdb 100644
--- a/arch/arm/boot/dts/tegra20-colibri.dtsi
+++ b/arch/arm/boot/dts/tegra20-colibri.dtsi
@@ -757,4 +757,20 @@
 		output-high;
 		line-name = "LAN_RESET#";
 	};
+
+	/* Tri-stating GMI_WR_N on SODIMM pin 99 nPWE */
+	npwe {
+		gpio-hog;
+		gpios = <TEGRA_GPIO(T, 5) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "Tri-state nPWE";
+	};
+
+	/* Not tri-stating GMI_WR_N on SODIMM pin 93 RDnWR */
+	rdnwr {
+		gpio-hog;
+		gpios = <TEGRA_GPIO(T, 6) GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "Not tri-state RDnWR";
+	};
 };
-- 
2.39.5