Save some CPU from unnecessary polling and make SPI flash reading a tiny bit faster.
Cc: stable@vger.kernel.org # v5.7+ Fixes: 23beb1adb5f6 ("arm64: dts: mt7622: add flash related device nodes") Signed-off-by: Chuanhong Guo gch981213@gmail.com --- The nor controller driver in kernem when this dt is added doesn't support IRQ so there isn't one defined in dt back then. However, device-tree is supposed to describe the hardware, so I think this can count as a fix. My main purpose for the fixes tag is just for the linux-stable backport though. spi-mtk-nor supports interrupt since v5.7.
arch/arm64/boot/dts/mediatek/mt7622.dtsi | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi index 8c2563a3919a..e263a81a011b 100644 --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi @@ -570,6 +570,7 @@ nor_flash: spi@11014000 { compatible = "mediatek,mt7622-nor", "mediatek,mt8173-nor"; reg = <0 0x11014000 0 0xe0>; + interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_LOW>; clocks = <&pericfg CLK_PERI_FLASH_PD>, <&topckgen CLK_TOP_FLASH_SEL>; clock-names = "spi", "sf";