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5e67d47d0b
Fix our design flaw in supply voltage distribution on the Quad and QuadPlus
based boards.
The problem is that we supply the SoC cache (VDD_CACHE_CAP) from VDD_PU
instead of VDD_SOC. The VDD_PU internal regulator can be disabled by PM
if VPU or GPU is not used. If that happens the system freezes. To prevent
that configure the reg_pu regulator to be always on.
Fixes: 0de4ab81ab ("ARM: dts: imx6dl-yapp4: Add Y Soft IOTA Crux/Crux+ board")
Cc: petrben@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Petr Benes <petr.benes@ysoft.com>
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
59 lines
691 B
Plaintext
59 lines
691 B
Plaintext
// SPDX-License-Identifier: GPL-2.0
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//
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// Copyright (C) 2021 Y Soft Corporation, a.s.
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/dts-v1/;
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#include "imx6q.dtsi"
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#include "imx6dl-yapp4-common.dtsi"
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/ {
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model = "Y Soft IOTA Crux i.MX6Quad board";
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compatible = "ysoft,imx6q-yapp4-crux", "fsl,imx6q";
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memory@10000000 {
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device_type = "memory";
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reg = <0x10000000 0xf0000000>;
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};
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};
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&gpio_oled {
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status = "okay";
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};
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&leds {
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status = "okay";
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};
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&oled_1305 {
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status = "okay";
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};
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&oled_1309 {
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status = "okay";
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};
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®_pu {
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regulator-always-on;
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};
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®_usb_h1_vbus {
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status = "okay";
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};
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&touchkeys {
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status = "okay";
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};
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&uart2 {
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status = "disabled";
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};
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&usbh1 {
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status = "okay";
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};
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&usbphy2 {
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status = "okay";
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};
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