From: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
The EthernetAVB should not depend on the bootloader to setup correct
drive-strength values. Values for drive-strength where found by
examining the registers after the bootloader has configured the
registers and successfully used the EthernetAVB.
Based on commit 7d73a4da2681dc5d ("arm64: dts: r8a7795: salvator-x: Set
drive-strength for ravb pins").
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
---
arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts b/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts
index 18b478be484c..31f02219ed2f 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts
+++ b/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts
@@ -110,8 +110,22 @@
pinctrl-names = "default";
avb_pins: avb {
- groups = "avb_mdc";
- function = "avb";
+ mux {
+ groups = "avb_link", "avb_phy_int", "avb_mdc",
+ "avb_mii";
+ function = "avb";
+ };
+
+ pins_mdc {
+ groups = "avb_mdc";
+ drive-strength = <24>;
+ };
+
+ pins_mii_tx {
+ pins = "PIN_AVB_TX_CTL", "PIN_AVB_TXC", "PIN_AVB_TD0",
+ "PIN_AVB_TD1", "PIN_AVB_TD2", "PIN_AVB_TD3";
+ drive-strength = <12>;
+ };
};
scif1_pins: scif1 {
--
2.1.4
