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| author | Biju Das <biju.das.jz@bp.renesas.com> | 2020-09-24 09:05:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-29 10:12:05 +0100 |
| commit | b18eb82bfc848eeca176e0e032465a05cac75c67 (patch) | |
| tree | c7016073a852c6b9669096f16d94a69a9c9ebcaf /arch/arm/boot/dts | |
| parent | c1b3f654bed2d2606d173dfd63d834e472b8da1c (diff) | |
| download | linux-stable-b18eb82bfc848eeca176e0e032465a05cac75c67.tar.gz linux-stable-b18eb82bfc848eeca176e0e032465a05cac75c67.tar.bz2 linux-stable-b18eb82bfc848eeca176e0e032465a05cac75c67.zip | |
ARM: dts: iwg20d-q7-common: Fix touch controller probe failure
[ Upstream commit 08d7a73fffb6769b1cf2278bf697e692daba3abf ]
As per the iWave RZ/G1M schematic, the signal LVDS_PPEN controls the
supply voltage for the touch panel, LVDS receiver and RGB LCD panel. Add
a regulator for these device nodes and remove the powerdown-gpios
property from the lvds-receiver node as it results in a touch controller
driver probe failure.
Fixes: 6f89dd9e9325 ("ARM: dts: iwg20d-q7-common: Add LCD support")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20200924080535.3641-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/arm/boot/dts')
| -rw-r--r-- | arch/arm/boot/dts/iwg20d-q7-common.dtsi | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/iwg20d-q7-common.dtsi b/arch/arm/boot/dts/iwg20d-q7-common.dtsi index ebbe1518ef8a..63cafd220dba 100644 --- a/arch/arm/boot/dts/iwg20d-q7-common.dtsi +++ b/arch/arm/boot/dts/iwg20d-q7-common.dtsi @@ -57,7 +57,7 @@ lvds-receiver { compatible = "ti,ds90cf384a", "lvds-decoder"; - powerdown-gpios = <&gpio7 25 GPIO_ACTIVE_LOW>; + power-supply = <&vcc_3v3_tft1>; ports { #address-cells = <1>; @@ -81,6 +81,7 @@ panel { compatible = "edt,etm0700g0dh6"; backlight = <&lcd_backlight>; + power-supply = <&vcc_3v3_tft1>; port { panel_in: endpoint { @@ -113,6 +114,17 @@ }; }; + vcc_3v3_tft1: regulator-panel { + compatible = "regulator-fixed"; + + regulator-name = "vcc-3v3-tft1"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + enable-active-high; + startup-delay-us = <500>; + gpio = <&gpio7 25 GPIO_ACTIVE_HIGH>; + }; + vcc_sdhi1: regulator-vcc-sdhi1 { compatible = "regulator-fixed"; @@ -207,6 +219,7 @@ reg = <0x38>; interrupt-parent = <&gpio2>; interrupts = <12 IRQ_TYPE_EDGE_FALLING>; + vcc-supply = <&vcc_3v3_tft1>; }; }; |