The Retronix R-Car V4H Sparrow Hawk EVTB1 uses 1V8 IO voltage supply
for VDDQ18_25_AVB power rail. Update the AVB0 pinmux to reflect the
change in IO voltage. Since the VDDQ18_25_AVB power rail is shared,
all four AVB0, AVB1, AVB2, TSN0 PFC/GPIO POC[7..4] registers have to
be configured the same way.
Correct the voltage for EVTA1 boards accordingly by patching the U-Boot
control DT in SPL.
Signed-off-by: Marek Vasut <marek.vasut+rene...@mailbox.org>
---
Cc: Nobuhiro Iwamatsu <iwama...@nigauri.org>
Cc: Tom Rini <tr...@konsulko.com>
---
V2: Move DT change to arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
until the same fix lands in mainline Linux
---
arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi | 7 +++++++
board/renesas/sparrowhawk/sparrowhawk.c | 12 ++++++++++++
2 files changed, 19 insertions(+)
diff --git a/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
b/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
index b5f226f2f2a..dff0355150d 100644
--- a/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
+++ b/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
@@ -7,6 +7,13 @@
#include "r8a779g0-u-boot.dtsi"
+&avb0_pins {
+ pins-vddq18-25-avb {
+ pins = "PIN_VDDQ_AVB0", "PIN_VDDQ_AVB1", "PIN_VDDQ_AVB2",
"PIN_VDDQ_TSN0";
+ power-source = <1800>;
+ };
+};
+
/* Page 31 / FAN */
&gpio1 {
pwm-fan-hog {
diff --git a/board/renesas/sparrowhawk/sparrowhawk.c
b/board/renesas/sparrowhawk/sparrowhawk.c
index 1fd7a63d2fa..58de7f25cbd 100644
--- a/board/renesas/sparrowhawk/sparrowhawk.c
+++ b/board/renesas/sparrowhawk/sparrowhawk.c
@@ -231,6 +231,18 @@ void spl_perform_fixups(struct spl_image_info *spl_image)
printf("Failed to disable UHS pins in MicroSD node: %d\n", err);
return;
}
+
+ offs = fdt_path_offset(blob,
"/soc/pinctrl@e6050000/avb0/pins-vddq18-25-avb");
+ if (offs < 0) {
+ printf("Failed to locate AVB pinctrl node: %d\n", offs);
+ return;
+ }
+
+ err = fdt_setprop_u32(blob, offs, "power-source", 2500);
+ if (err < 0) {
+ printf("Failed to set AVB IO voltage: %d\n", err);
+ return;
+ }
}
#endif
--
2.47.2
