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ARM: rockchip: rk3188: enable pull-ups on UART RX pins

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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>
This commit is contained in:
Max Schwarz 2014-03-09 20:43:11 +01:00 committed by Heiko Stuebner
parent c9eaa447e7
commit 6faff9b6bd
1 changed files with 4 additions and 4 deletions
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8
arch/arm/boot/dts/rk3188.dtsi
View file

@ -149,7 +149,7 @@ pcfg_pull_none: pcfg_pull_none {
uart0 { uart0 {
uart0_xfer: uart0-xfer { 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>; <RK_GPIO1 1 RK_FUNC_1 &pcfg_pull_none>;
}; };
@ -164,7 +164,7 @@ uart0_rts: uart0-rts {
uart1 { uart1 {
uart1_xfer: uart1-xfer { 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>; <RK_GPIO1 5 RK_FUNC_1 &pcfg_pull_none>;
}; };
@ -179,7 +179,7 @@ uart1_rts: uart1-rts {
uart2 { uart2 {
uart2_xfer: uart2-xfer { 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>; <RK_GPIO1 9 RK_FUNC_1 &pcfg_pull_none>;
}; };
/* no rts / cts for uart2 */ /* no rts / cts for uart2 */
@ -187,7 +187,7 @@ uart2_xfer: uart2-xfer {
uart3 { uart3 {
uart3_xfer: uart3-xfer { 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>; <RK_GPIO1 11 RK_FUNC_1 &pcfg_pull_none>;
}; };