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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
d8581c7c8b
The board file for imx6sx-sdb overrides cpufreq operating points to use
higher voltages. This is done because the board has a shared rail for
VDD_ARM_IN and VDD_SOC_IN and when using LDO bypass the shared voltage
needs to be a value suitable for both ARM and SOC.
This only applies to LDO bypass mode, a feature not present in upstream.
When LDOs are enabled the effect is to use higher voltages than necessary
for no good reason.
Setting these higher voltages can make some boards fail to boot with ugly
semi-random crashes reminiscent of memory corruption. These failures only
happen on board rev. C, rev. B is reported to still work.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Fixes: 54183bd7f7 ("ARM: imx6sx-sdb: add revb board and make it default")
Cc: stable@vger.kernel.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
131 lines
2.7 KiB
Plaintext
131 lines
2.7 KiB
Plaintext
/*
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* Copyright (C) 2015 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include "imx6sx-sdb.dtsi"
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/ {
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model = "Freescale i.MX6 SoloX SDB RevB Board";
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};
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&i2c1 {
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clock-frequency = <100000>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_i2c1>;
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status = "okay";
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pmic: pfuze100@08 {
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compatible = "fsl,pfuze200";
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reg = <0x08>;
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regulators {
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sw1a_reg: sw1ab {
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regulator-min-microvolt = <300000>;
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regulator-max-microvolt = <1875000>;
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regulator-boot-on;
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regulator-always-on;
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regulator-ramp-delay = <6250>;
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};
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sw2_reg: sw2 {
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <3300000>;
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regulator-boot-on;
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regulator-always-on;
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};
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sw3a_reg: sw3a {
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regulator-min-microvolt = <400000>;
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regulator-max-microvolt = <1975000>;
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regulator-boot-on;
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regulator-always-on;
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};
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sw3b_reg: sw3b {
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regulator-min-microvolt = <400000>;
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regulator-max-microvolt = <1975000>;
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regulator-boot-on;
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regulator-always-on;
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};
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swbst_reg: swbst {
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regulator-min-microvolt = <5000000>;
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regulator-max-microvolt = <5150000>;
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};
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snvs_reg: vsnvs {
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regulator-min-microvolt = <1000000>;
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regulator-max-microvolt = <3000000>;
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regulator-boot-on;
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regulator-always-on;
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};
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vref_reg: vrefddr {
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regulator-boot-on;
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regulator-always-on;
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};
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vgen1_reg: vgen1 {
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <1550000>;
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regulator-always-on;
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};
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vgen2_reg: vgen2 {
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <1550000>;
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};
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vgen3_reg: vgen3 {
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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vgen4_reg: vgen4 {
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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vgen5_reg: vgen5 {
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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vgen6_reg: vgen6 {
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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};
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};
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};
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&qspi2 {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_qspi2>;
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status = "okay";
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flash0: n25q256a@0 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "micron,n25q256a", "jedec,spi-nor";
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spi-max-frequency = <29000000>;
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reg = <0>;
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};
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flash1: n25q256a@1 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "micron,n25q256a", "jedec,spi-nor";
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spi-max-frequency = <29000000>;
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reg = <1>;
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};
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};
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