From: Marek Vasut marex@denx.de
stable inclusion from stable-5.10.58 commit 163e6d87216de5237547cd5e6aa7ab04b506d66c bugzilla: 176984 https://gitee.com/openeuler/kernel/issues/I4E2P4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 15f68f027ebd961b99a1c420f96ff3838c5e4450 ]
While 7e5f3155dcbb4 ("ARM: dts: stm32: Fix LED5 on STM32MP1 DHCOM PDK2") fixed the LED0 assignment on the PDK2 board, the same commit did not update the touchscreen IRQ line assignment, which is the same GPIO line, shared between the LED0 output and touchscreen IRQ input. To make this more convoluted, the same EXTI input (not the same GPIO line) is shared between Button B which is Active-Low IRQ, and touchscreen IRQ which is Edge-Falling IRQ, which cannot be used at the same time. In case the LCD board with touchscreen is in use, which is the case here, LED0 must be disabled, Button B must be polled, so the touchscreen interrupt works as it should.
Update the touchscreen IRQ line assignment, disable LED0 and use polled GPIO button driver for Button B, since the DT here describes baseboard with LCD board.
Fixes: 7e5f3155dcbb4 ("ARM: dts: stm32: Fix LED5 on STM32MP1 DHCOM PDK2") Signed-off-by: Marek Vasut marex@denx.de Cc: Alexandre Torgue alexandre.torgue@foss.st.com Cc: Patrice Chotard patrice.chotard@foss.st.com Cc: Patrick Delaunay patrick.delaunay@foss.st.com Cc: linux-stm32@st-md-mailman.stormreply.com To: linux-arm-kernel@lists.infradead.org Signed-off-by: Alexandre Torgue alexandre.torgue@foss.st.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi | 24 +++++++++++-------- 1 file changed, 14 insertions(+), 10 deletions(-)
diff --git a/arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi index 59b3239bcd76..633079245601 100644 --- a/arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi +++ b/arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi @@ -37,7 +37,7 @@ poll-interval = <20>;
/* - * The EXTi IRQ line 3 is shared with touchscreen and ethernet, + * The EXTi IRQ line 3 is shared with ethernet, * so mark this as polled GPIO key. */ button-0 { @@ -46,6 +46,16 @@ gpios = <&gpiof 3 GPIO_ACTIVE_LOW>; };
+ /* + * The EXTi IRQ line 6 is shared with touchscreen, + * so mark this as polled GPIO key. + */ + button-1 { + label = "TA2-GPIO-B"; + linux,code = <KEY_B>; + gpios = <&gpiod 6 GPIO_ACTIVE_LOW>; + }; + /* * The EXTi IRQ line 0 is shared with PMIC, * so mark this as polled GPIO key. @@ -60,13 +70,6 @@ gpio-keys { compatible = "gpio-keys";
- button-1 { - label = "TA2-GPIO-B"; - linux,code = <KEY_B>; - gpios = <&gpiod 6 GPIO_ACTIVE_LOW>; - wakeup-source; - }; - button-3 { label = "TA4-GPIO-D"; linux,code = <KEY_D>; @@ -82,6 +85,7 @@ label = "green:led5"; gpios = <&gpioc 6 GPIO_ACTIVE_HIGH>; default-state = "off"; + status = "disabled"; };
led-1 { @@ -185,8 +189,8 @@ touchscreen@38 { compatible = "edt,edt-ft5406"; reg = <0x38>; - interrupt-parent = <&gpiog>; - interrupts = <2 IRQ_TYPE_EDGE_FALLING>; /* GPIO E */ + interrupt-parent = <&gpioc>; + interrupts = <6 IRQ_TYPE_EDGE_FALLING>; /* GPIO E */ }; };