linux/arch/arm/boot/dts/rk3188.dtsi
Max Schwarz 6faff9b6bd 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>
2014-04-15 11:00:11 +02:00

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/*
* Copyright (c) 2013 MundoReader S.L.
* Author: Heiko Stuebner <heiko@sntech.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/rockchip.h>
#include "rk3xxx.dtsi"
#include "rk3188-clocks.dtsi"
/ {
compatible = "rockchip,rk3188";
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a9";
next-level-cache = <&L2>;
reg = <0x0>;
};
cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a9";
next-level-cache = <&L2>;
reg = <0x1>;
};
cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a9";
next-level-cache = <&L2>;
reg = <0x2>;
};
cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a9";
next-level-cache = <&L2>;
reg = <0x3>;
};
};
soc {
global-timer@1013c200 {
interrupts = <GIC_PPI 11 0xf04>;
};
local-timer@1013c600 {
interrupts = <GIC_PPI 13 0xf04>;
};
sram: sram@10080000 {
compatible = "mmio-sram";
reg = <0x10080000 0x8000>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x10080000 0x8000>;
smp-sram@0 {
compatible = "rockchip,rk3066-smp-sram";
reg = <0x0 0x50>;
};
};
pinctrl@20008000 {
compatible = "rockchip,rk3188-pinctrl";
reg = <0x20008000 0xa0>,
<0x20008164 0x1a0>;
reg-names = "base", "pull";
#address-cells = <1>;
#size-cells = <1>;
ranges;
gpio0: gpio0@0x2000a000 {
compatible = "rockchip,rk3188-gpio-bank0";
reg = <0x2000a000 0x100>,
<0x20004064 0x8>;
interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk_gates8 9>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
};
gpio1: gpio1@0x2003c000 {
compatible = "rockchip,gpio-bank";
reg = <0x2003c000 0x100>;
interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk_gates8 10>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
};
gpio2: gpio2@2003e000 {
compatible = "rockchip,gpio-bank";
reg = <0x2003e000 0x100>;
interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk_gates8 11>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
};
gpio3: gpio3@20080000 {
compatible = "rockchip,gpio-bank";
reg = <0x20080000 0x100>;
interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk_gates8 12>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
};
pcfg_pull_up: pcfg_pull_up {
bias-pull-up;
};
pcfg_pull_down: pcfg_pull_down {
bias-pull-down;
};
pcfg_pull_none: pcfg_pull_none {
bias-disable;
};
uart0 {
uart0_xfer: uart0-xfer {
rockchip,pins = <RK_GPIO1 0 RK_FUNC_1 &pcfg_pull_up>,
<RK_GPIO1 1 RK_FUNC_1 &pcfg_pull_none>;
};
uart0_cts: uart0-cts {
rockchip,pins = <RK_GPIO1 2 RK_FUNC_1 &pcfg_pull_none>;
};
uart0_rts: uart0-rts {
rockchip,pins = <RK_GPIO1 3 RK_FUNC_1 &pcfg_pull_none>;
};
};
uart1 {
uart1_xfer: uart1-xfer {
rockchip,pins = <RK_GPIO1 4 RK_FUNC_1 &pcfg_pull_up>,
<RK_GPIO1 5 RK_FUNC_1 &pcfg_pull_none>;
};
uart1_cts: uart1-cts {
rockchip,pins = <RK_GPIO1 6 RK_FUNC_1 &pcfg_pull_none>;
};
uart1_rts: uart1-rts {
rockchip,pins = <RK_GPIO1 7 RK_FUNC_1 &pcfg_pull_none>;
};
};
uart2 {
uart2_xfer: uart2-xfer {
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 */
};
uart3 {
uart3_xfer: uart3-xfer {
rockchip,pins = <RK_GPIO1 10 RK_FUNC_1 &pcfg_pull_up>,
<RK_GPIO1 11 RK_FUNC_1 &pcfg_pull_none>;
};
uart3_cts: uart3-cts {
rockchip,pins = <RK_GPIO1 12 RK_FUNC_1 &pcfg_pull_none>;
};
uart3_rts: uart3-rts {
rockchip,pins = <RK_GPIO1 13 RK_FUNC_1 &pcfg_pull_none>;
};
};
sd0 {
sd0_clk: sd0-clk {
rockchip,pins = <RK_GPIO3 2 RK_FUNC_1 &pcfg_pull_none>;
};
sd0_cmd: sd0-cmd {
rockchip,pins = <RK_GPIO3 3 RK_FUNC_1 &pcfg_pull_none>;
};
sd0_cd: sd0-cd {
rockchip,pins = <RK_GPIO3 8 RK_FUNC_1 &pcfg_pull_none>;
};
sd0_wp: sd0-wp {
rockchip,pins = <RK_GPIO3 9 RK_FUNC_1 &pcfg_pull_none>;
};
sd0_pwr: sd0-pwr {
rockchip,pins = <RK_GPIO3 1 RK_FUNC_1 &pcfg_pull_none>;
};
sd0_bus1: sd0-bus-width1 {
rockchip,pins = <RK_GPIO3 4 RK_FUNC_1 &pcfg_pull_none>;
};
sd0_bus4: sd0-bus-width4 {
rockchip,pins = <RK_GPIO3 4 RK_FUNC_1 &pcfg_pull_none>,
<RK_GPIO3 5 RK_FUNC_1 &pcfg_pull_none>,
<RK_GPIO3 6 RK_FUNC_1 &pcfg_pull_none>,
<RK_GPIO3 7 RK_FUNC_1 &pcfg_pull_none>;
};
};
sd1 {
sd1_clk: sd1-clk {
rockchip,pins = <RK_GPIO3 21 RK_FUNC_1 &pcfg_pull_none>;
};
sd1_cmd: sd1-cmd {
rockchip,pins = <RK_GPIO3 16 RK_FUNC_1 &pcfg_pull_none>;
};
sd1_cd: sd1-cd {
rockchip,pins = <RK_GPIO3 22 RK_FUNC_1 &pcfg_pull_none>;
};
sd1_wp: sd1-wp {
rockchip,pins = <RK_GPIO3 23 RK_FUNC_1 &pcfg_pull_none>;
};
sd1_bus1: sd1-bus-width1 {
rockchip,pins = <RK_GPIO3 17 RK_FUNC_1 &pcfg_pull_none>;
};
sd1_bus4: sd1-bus-width4 {
rockchip,pins = <RK_GPIO3 17 RK_FUNC_1 &pcfg_pull_none>,
<RK_GPIO3 18 RK_FUNC_1 &pcfg_pull_none>,
<RK_GPIO3 19 RK_FUNC_1 &pcfg_pull_none>,
<RK_GPIO3 20 RK_FUNC_1 &pcfg_pull_none>;
};
};
};
};
};