From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
This patch enables usb2_phy3 node for r8a7795 with Salvator-XS.
You must change the SW31 to OFF-OFF-ON-ON-ON-ON on the board.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
---
.../arm64/boot/dts/renesas/r8a7795-salvator-xs.dts | 24 ++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a7795-salvator-xs.dts b/arch/arm64/boot/dts/renesas/r8a7795-salvator-xs.dts
index 83676684c6b4..622b2a22ab0f 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795-salvator-xs.dts
+++ b/arch/arm64/boot/dts/renesas/r8a7795-salvator-xs.dts
@@ -145,6 +145,23 @@
groups = "usb2";
function = "usb2";
};
+
+ /*
+ * - On Salvator-X[S], GP6_3[01] are connected to ADV7482 as irq pins
+ * (when SW31 is the default setting on Salvator-XS).
+ * - If SW31 is the default setting, you cannot use USB2.0 ch3 on
+ * r8a7795 with Salvator-XS.
+ * Hence the SW31 setting must be changed like 2) below.
+ * 1) Default setting of SW31: ON-ON-OFF-OFF-OFF-OFF:
+ * - Connect GP6_3[01] to ADV7842.
+ * 2) Changed setting of SW31: OFF-OFF-ON-ON-ON-ON:
+ * - Connect GP6_3[01] to BD082065 (USB2.0 ch3's host power).
+ * - Connect GP6_{04,21} to ADV7842.
+ */
+ usb2_ch3_pins: usb2_ch3 {
+ groups = "usb2_ch3";
+ function = "usb2_ch3";
+ };
};
&usb2_phy2 {
@@ -153,3 +170,10 @@
status = "okay";
};
+
+&usb2_phy3 {
+ pinctrl-0 = <&usb2_ch3_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+};
--
2.11.0
