From 8ddfa04de492ceac93e72063e027216bb9b07ca5 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 20 Oct 2022 18:51:34 -0400 Subject: [PATCH] arm64: dts: qcom: sc7180: revert "arm64: dts: qcom: sc7180: Avoid glitching SPI CS at bootup on trogdor" This reverts commit e440e30e26dd6b0424002ad0ddcbbcea783efd85 because it is not a reliable way of fixing SPI CS glitch and it depends on specific Linux kernel pin controller driver behavior. This behavior of kernel driver was changed in commit b991f8c3622c ("pinctrl: core: Handling pinmux and pinconf separately") thus effectively the DTS fix stopped being effective. Proper solution for the glitching SPI chip select must be implemented in the drivers, not via ordering of entries in DTS, and is already introduced in commit d21f4b7ffc22 ("pinctrl: qcom: Avoid glitching lines when we first mux to output"). Signed-off-by: Krzysztof Kozlowski Reviewed-by: Douglas Anderson Tested-by: Douglas Anderson Reviewed-by: Stephen Boyd Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20221020225135.31750-3-krzysztof.kozlowski@linaro.org --- arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 27 +++----------------- 1 file changed, 3 insertions(+), 24 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi index 1a1c346d619c3..33817358ebb02 100644 --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi @@ -880,17 +880,17 @@ hp_i2c: &i2c9 { }; &spi0 { - pinctrl-0 = <&qup_spi0_cs_gpio_init_high>, <&qup_spi0_cs_gpio>; + pinctrl-0 = <&qup_spi0_cs_gpio>; cs-gpios = <&tlmm 37 GPIO_ACTIVE_LOW>; }; &spi6 { - pinctrl-0 = <&qup_spi6_cs_gpio_init_high>, <&qup_spi6_cs_gpio>; + pinctrl-0 = <&qup_spi6_cs_gpio>; cs-gpios = <&tlmm 62 GPIO_ACTIVE_LOW>; }; ap_spi_fp: &spi10 { - pinctrl-0 = <&qup_spi10_cs_gpio_init_high>, <&qup_spi10_cs_gpio>; + pinctrl-0 = <&qup_spi10_cs_gpio>; cs-gpios = <&tlmm 89 GPIO_ACTIVE_LOW>; cros_ec_fp: ec@0 { @@ -1422,27 +1422,6 @@ ap_spi_fp: &spi10 { }; }; - qup_spi0_cs_gpio_init_high: qup-spi0-cs-gpio-init-high { - pinconf { - pins = "gpio37"; - output-high; - }; - }; - - qup_spi6_cs_gpio_init_high: qup-spi6-cs-gpio-init-high { - pinconf { - pins = "gpio62"; - output-high; - }; - }; - - qup_spi10_cs_gpio_init_high: qup-spi10-cs-gpio-init-high { - pinconf { - pins = "gpio89"; - output-high; - }; - }; - qup_uart3_sleep: qup-uart3-sleep { pinmux { pins = "gpio38", "gpio39", -- 2.30.2