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authorMax Schwarz <max.schwarz@online.de>2014-03-09 20:43:11 +0100
committerHeiko Stuebner <heiko@sntech.de>2014-04-15 11:00:11 +0200
commit6faff9b6bd3d2a279b806d721bb2257fdd2e6bf2 (patch)
tree3252607a819f7bcc39c21187ae264a01fde16bee /arch/arm/boot
parentc9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff)
ARM: rockchip: rk3188: enable pull-ups on UART RX pins
The default behaviour of the uart-rx pins on the rk3188 is to be pulled up and a lot of designs use diodes to even prevent them from being raised from the outside. Therefore change the rx-pin settings accordingly. This also fixes a uart receive problem on mass production Radxa Rock boards. Signed-off-by: Max Schwarz <max.schwarz@online.de> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'arch/arm/boot')
-rw-r--r--arch/arm/boot/dts/rk3188.dtsi8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/boot/dts/rk3188.dtsi b/arch/arm/boot/dts/rk3188.dtsi
index bb36596ea205..ed9a70af3e3f 100644
--- a/arch/arm/boot/dts/rk3188.dtsi
+++ b/arch/arm/boot/dts/rk3188.dtsi
@@ -149,7 +149,7 @@
uart0 {
uart0_xfer: uart0-xfer {
- rockchip,pins = <RK_GPIO1 0 RK_FUNC_1 &pcfg_pull_none>,
+ rockchip,pins = <RK_GPIO1 0 RK_FUNC_1 &pcfg_pull_up>,
<RK_GPIO1 1 RK_FUNC_1 &pcfg_pull_none>;
};
@@ -164,7 +164,7 @@
uart1 {
uart1_xfer: uart1-xfer {
- rockchip,pins = <RK_GPIO1 4 RK_FUNC_1 &pcfg_pull_none>,
+ rockchip,pins = <RK_GPIO1 4 RK_FUNC_1 &pcfg_pull_up>,
<RK_GPIO1 5 RK_FUNC_1 &pcfg_pull_none>;
};
@@ -179,7 +179,7 @@
uart2 {
uart2_xfer: uart2-xfer {
- rockchip,pins = <RK_GPIO1 8 RK_FUNC_1 &pcfg_pull_none>,
+ rockchip,pins = <RK_GPIO1 8 RK_FUNC_1 &pcfg_pull_up>,
<RK_GPIO1 9 RK_FUNC_1 &pcfg_pull_none>;
};
/* no rts / cts for uart2 */
@@ -187,7 +187,7 @@
uart3 {
uart3_xfer: uart3-xfer {
- rockchip,pins = <RK_GPIO1 10 RK_FUNC_1 &pcfg_pull_none>,
+ rockchip,pins = <RK_GPIO1 10 RK_FUNC_1 &pcfg_pull_up>,
<RK_GPIO1 11 RK_FUNC_1 &pcfg_pull_none>;
};