From: Dave Gerlach <d-gerlach@xxxxxx>
Define pinctrl sleep states for both dcan0 and dcan1 to place pull downs
on the lines to optimize power savings during suspend.
Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx>
Signed-off-by: Sekhar Nori <nsekhar@xxxxxx>
---
arch/arm/boot/dts/am437x-gp-evm.dts | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 6d03baa..ca9e1ab 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -262,12 +262,26 @@
>;
};
+ dcan0_sleep: dcan0_sleep_pins {
+ pinctrl-single,pins = <
+ 0x178 (PIN_INPUT_PULLDOWN | MUX_MODE7)
+ 0x17c (PIN_INPUT_PULLDOWN | MUX_MODE7)
+ >;
+ };
+
dcan1_default: dcan1_default_pins {
pinctrl-single,pins = <
0x180 (PIN_OUTPUT_PULLDOWN | MUX_MODE2) /* uart1_rxd.d_can1_tx */
0x184 (PIN_INPUT_PULLUP | MUX_MODE2) /* uart1_txd.d_can1_rx */
>;
};
+
+ dcan1_sleep: dcan1_sleep_pins {
+ pinctrl-single,pins = <
+ 0x180 (PIN_INPUT_PULLDOWN | MUX_MODE7)
+ 0x184 (PIN_INPUT_PULLDOWN | MUX_MODE7)
+ >;
+ };
};
&i2c0 {
@@ -527,13 +541,15 @@
};
&dcan0 {
- pinctrl-names = "default";
+ pinctrl-names = "default", "sleep";
pinctrl-0 = <&dcan0_default>;
+ pinctrl-1 = <&dcan0_sleep>;
status = "okay";
};
&dcan1 {
- pinctrl-names = "default";
+ pinctrl-names = "default", "sleep";
pinctrl-0 = <&dcan1_default>;
+ pinctrl-1 = <&dcan1_sleep>;
status = "okay";
};
--
1.8.3.2
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