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>

diff --git a/arch/arm/boot/dts/tegra20-colibri.dtsi b/arch/arm/boot/dts/tegra20-colibri.dtsi
index 281e0dd..aba56b4 100644 (file)
--- 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";
+       };
 };