ARM: dts: sama7g5ek: fix TXC pin configuration

TXC line is directly connected from the SoC to the KSZ9131 PHY. There
is a transient state on this signal, before configuring it to RGMII,
which leads to packet transmit being blocked.
Keeping a pull-up when muxing this pin as function A (G0_TXCK) fixes
the issue.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>

diff --git a/arch/arm/dts/sama7g5ek.dts b/arch/arm/dts/sama7g5ek.dts
index b7c3555..ff9c9eb 100644 (file)
--- a/arch/arm/dts/sama7g5ek.dts
+++ b/arch/arm/dts/sama7g5ek.dts
@@ -90,7 +90,7 @@
        #address-cells = <1>;
        #size-cells = <0>;
        pinctrl-names = "default";
-       pinctrl-0 = <&pinctrl_gmac0_default>;
+       pinctrl-0 = <&pinctrl_gmac0_default &pinctrl_gmac0_txc_default>;
        phy-mode = "rgmii-id";
        status = "okay";
 
@@ -173,7 +173,6 @@
                         <PIN_PA28__G0_RX2>,
                         <PIN_PA29__G0_RX3>,
                         <PIN_PA15__G0_TXEN>,
-                        <PIN_PA24__G0_TXCK>,
                         <PIN_PA30__G0_RXCK>,
                         <PIN_PA18__G0_RXDV>,
                         <PIN_PA22__G0_MDC>,
@@ -182,6 +181,11 @@
                bias-disable;
        };
 
+       pinctrl_gmac0_txc_default: gmac0_txc_default {
+               pinmux = <PIN_PA24__G0_TXCK>;
+               bias-pull-up;
+       };
+
        pinctrl_gmac1_default: gmac1_default {
                pinmux = <PIN_PD30__G1_TXCK>,
                         <PIN_PD22__G1_TX0>,