linux_dsm_epyc7002/arch/arm/boot/dts/sun8i-a83t.dtsi
Chen-Yu Tsai 80ee72e7e9 ARM: dts: sunxi: Explicitly enable pull-ups for MMC pins
In the past, all the MMC pins had

	allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;

which was actually a no-op. We were relying on U-boot to set the bias
pull up for us. These properties were removed as part of the fix up to
actually support no bias on the pins. During the transition some boards
experienced regular MMC time-outs during normal operation, while others
completely failed to initialize the SD card.

Given that MMC starts in open-drain mode and the pull-ups are required,
it's best to enable it for all the pin settings.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-01-10 18:52:41 +01:00

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/*
* Copyright 2015 Vishnu Patekar
*
* Vishnu Patekar <vishnupatekar0510@gmail.com>
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This file 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 file 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.
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "skeleton.dtsi"
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/pinctrl/sun4i-a10.h>
/ {
interrupt-parent = <&gic>;
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <0>;
};
cpu@1 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <1>;
};
cpu@2 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <2>;
};
cpu@3 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <3>;
};
cpu@100 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <0x100>;
};
cpu@101 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <0x101>;
};
cpu@102 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <0x102>;
};
cpu@103 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <0x103>;
};
};
timer {
compatible = "arm,armv7-timer";
interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
};
clocks {
#address-cells = <1>;
#size-cells = <1>;
ranges;
/* TODO: PRCM block has a mux for this. */
osc24M: osc24M_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <24000000>;
clock-output-names = "osc24M";
};
/*
* This is called "internal OSC" in some places.
* It is an internal RC-based oscillator.
* TODO: Its controls are in the PRCM block.
*/
osc16M: osc16M_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <16000000>;
clock-output-names = "osc16M";
};
osc16Md512: osc16Md512_clk {
#clock-cells = <0>;
compatible = "fixed-factor-clock";
clock-div = <512>;
clock-mult = <1>;
clocks = <&osc16M>;
clock-output-names = "osc16M-d512";
};
};
soc {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges;
pio: pinctrl@01c20800 {
compatible = "allwinner,sun8i-a83t-pinctrl";
interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
reg = <0x01c20800 0x400>;
clocks = <&osc24M>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <3>;
#gpio-cells = <3>;
mmc0_pins_a: mmc0@0 {
pins = "PF0", "PF1", "PF2",
"PF3", "PF4", "PF5";
function = "mmc0";
drive-strength = <30>;
bias-pull-up;
};
uart0_pins_a: uart0@0 {
pins = "PF2", "PF4";
function = "uart0";
};
uart0_pins_b: uart0@1 {
pins = "PB9", "PB10";
function = "uart0";
};
};
timer@01c20c00 {
compatible = "allwinner,sun4i-a10-timer";
reg = <0x01c20c00 0xa0>;
interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&osc24M>;
};
watchdog@01c20ca0 {
compatible = "allwinner,sun6i-a31-wdt";
reg = <0x01c20ca0 0x20>;
interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&osc24M>;
};
uart0: serial@01c28000 {
compatible = "snps,dw-apb-uart";
reg = <0x01c28000 0x400>;
interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
clocks = <&osc24M>;
status = "disabled";
};
gic: interrupt-controller@01c81000 {
compatible = "arm,cortex-a7-gic", "arm,cortex-a15-gic";
reg = <0x01c81000 0x1000>,
<0x01c82000 0x1000>,
<0x01c84000 0x2000>,
<0x01c86000 0x2000>;
interrupt-controller;
#interrupt-cells = <3>;
interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_HIGH)>;
};
};
};