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From fb760e67e0336587583eb32cf77bbdf4b4e1fc74 Mon Sep 17 00:00:00 2001
From: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Date: Tue, 28 May 2019 19:55:13 +0300
Subject: [PATCH] arm64: dts: renesas: ulcb-vb2: Drive CAN controller reset
through regulators
This uses regulators instead of GPIO hogs for controlling CAN
reset pins on VideoBox v2 which fixes CAN cold-start issues.
Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
---
arch/arm64/boot/dts/renesas/ulcb-vb2.dtsi | 32 +++++++++++++++++++------------
1 file changed, 20 insertions(+), 12 deletions(-)
diff --git a/arch/arm64/boot/dts/renesas/ulcb-vb2.dtsi b/arch/arm64/boot/dts/renesas/ulcb-vb2.dtsi
index 1610949..5831d12 100644
--- a/arch/arm64/boot/dts/renesas/ulcb-vb2.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb-vb2.dtsi
@@ -94,6 +94,24 @@
regulator-always-on;
};
+ can2_power: regulator@11 {
+ compatible = "regulator-fixed";
+ regulator-name = "can2_power";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&gpio_ext_pwr 8 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
+ can3_power: regulator@12 {
+ compatible = "regulator-fixed";
+ regulator-name = "can3_power";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&gpio_ext_pwr 9 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
/delete-node/sound;
rsnd_ak4613: sound@0 {
@@ -187,6 +205,7 @@
interrupt-parent = <&gpio0>;
interrupts = <15 GPIO_ACTIVE_LOW>;
spi-max-frequency = <10000000>;
+ vdd-supply = <&can2_power>;
};
spican1: spidev@1 {
compatible = "microchip,mcp2515";
@@ -195,6 +214,7 @@
interrupt-parent = <&gpio1>;
interrupts = <5 GPIO_ACTIVE_LOW>;
spi-max-frequency = <10000000>;
+ vdd-supply = <&can3_power>;
};
};
};
@@ -1147,12 +1167,6 @@
output-high;
line-name = "can2_120R_load";
};
- can2_rst {
- gpio-hog;
- gpios = <8 GPIO_ACTIVE_HIGH>;
- output-high;
- line-name = "can2_rst";
- };
/* CAN3 */
can3_stby {
gpio-hog;
@@ -1166,12 +1180,6 @@
output-high;
line-name = "can3_120R_load";
};
- can3_rst {
- gpio-hog;
- gpios = <9 GPIO_ACTIVE_HIGH>;
- output-high;
- line-name = "can3_rst";
- };
};
};
--
2.7.4
|
