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| author | Max Schwarz <max.schwarz@online.de> | 2014-03-09 20:43:11 +0100 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2014-04-15 11:00:11 +0200 |
| commit | 6faff9b6bd3d2a279b806d721bb2257fdd2e6bf2 (patch) | |
| tree | 3252607a819f7bcc39c21187ae264a01fde16bee /arch/arm/boot/dts | |
| parent | c9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff) | |
| download | lwn-6faff9b6bd3d2a279b806d721bb2257fdd2e6bf2.tar.gz lwn-6faff9b6bd3d2a279b806d721bb2257fdd2e6bf2.zip | |
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/dts')
| -rw-r--r-- | arch/arm/boot/dts/rk3188.dtsi | 8 |
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>; }; |