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[2003:d5:fbc5:6cfc::830]) by smtp.gmail.com with ESMTPSA id m18sm3567962wri.65.2018.04.10.07.18.17 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 10 Apr 2018 07:18:17 -0700 (PDT) Received: from chuck by debian64.daheim with local (Exim 4.90_1) (envelope-from ) id 1f5u6D-0007vx-36; Tue, 10 Apr 2018 16:18:17 +0200 From: Christian Lamparter To: linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org Cc: Bjorn Andersson , Linus Walleij , David Brown , Andy Gross , Sven Eckelmann Subject: [PATCH v3 2/2] pinctrl: msm: fix gpio-hog related boot issues Date: Tue, 10 Apr 2018 16:18:16 +0200 Message-Id: <20180410141816.30452-2-chunkeey@gmail.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180410141816.30452-1-chunkeey@gmail.com> References: <20180410141816.30452-1-chunkeey@gmail.com> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Sven Eckelmann reported an issue with the current IPQ4019 pinctrl. Setting up any gpio-hog in the device-tree for his device would "kill the bootup completely": | [ 0.477838] msm_serial 78af000.serial: could not find pctldev for node /soc/pinctrl@1000000/serial_pinmux, deferring probe | [ 0.499828] spi_qup 78b5000.spi: could not find pctldev for node /soc/pinctrl@1000000/spi_0_pinmux, deferring probe | [ 1.298883] requesting hog GPIO enable USB2 power (chip 1000000.pinctrl, offset 58) failed, -517 | [ 1.299609] gpiochip_add_data: GPIOs 0..99 (1000000.pinctrl) failed to register | [ 1.308589] ipq4019-pinctrl 1000000.pinctrl: Failed register gpiochip | [ 1.316586] msm_serial 78af000.serial: could not find pctldev for node /soc/pinctrl@1000000/serial_pinmux, deferring probe | [ 1.322415] spi_qup 78b5000.spi: could not find pctldev for node /soc/pinctrl@1000000/spi_0_pinmux, deferri This was also verified on a RT-AC58U (IPQ4018) which would no longer boot, if a gpio-hog was specified. (Tried forcing the USB LED PIN (GPIO0) to high.). The problem is that Pinctrl+GPIO registration is currently peformed in the following order in pinctrl-msm.c: 1. pinctrl_register() 2. gpiochip_add() 3. gpiochip_add_pin_range() The actual error code -517 == -EPROBE_DEFER is coming from pinctrl_get_device_gpio_range(), which is called through: gpiochip_add of_gpiochip_add of_gpiochip_scan_gpios gpiod_hog gpiochip_request_own_desc __gpiod_request chip->request gpiochip_generic_request pinctrl_gpio_request pinctrl_get_device_gpio_range pinctrl_get_device_gpio_range() is unable to find any valid pin ranges, since nothing has been added to the pinctrldev_list yet. so the range can't be found, and the operation fails with -EPROBE_DEFER. This patch fixes the issue by adding the "gpio-ranges" property to the pinctrl device node of all upstream Qcom SoC, so the ranges are added by of_gpiochip_add_pin_range(), which is called by of_gpiochip_add() before the call to of_gpiochip_scan_gpios() happens.gpiochip_add_pin_range() is longer needed and removed (to prevent adding the same entry to the pinctrldev_list twice). Reported-by: Sven Eckelmann Signed-off-by: Christian Lamparter --- arch/arm/boot/dts/qcom-apq8064.dtsi | 1 + arch/arm/boot/dts/qcom-apq8084.dtsi | 1 + arch/arm/boot/dts/qcom-ipq4019.dtsi | 1 + arch/arm/boot/dts/qcom-ipq8064.dtsi | 1 + arch/arm/boot/dts/qcom-mdm9615.dtsi | 1 + arch/arm/boot/dts/qcom-msm8660.dtsi | 1 + arch/arm/boot/dts/qcom-msm8960.dtsi | 1 + arch/arm/boot/dts/qcom-msm8974.dtsi | 1 + arch/arm64/boot/dts/qcom/ipq8074.dtsi | 3 ++- arch/arm64/boot/dts/qcom/msm8916.dtsi | 1 + arch/arm64/boot/dts/qcom/msm8992.dtsi | 1 + arch/arm64/boot/dts/qcom/msm8994.dtsi | 1 + arch/arm64/boot/dts/qcom/msm8996.dtsi | 1 + 13 files changed, 14 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/qcom-apq8064.dtsi b/arch/arm/boot/dts/qcom-apq8064.dtsi index 3ca96e361878..17ad9cbd9f8c 100644 --- a/arch/arm/boot/dts/qcom-apq8064.dtsi +++ b/arch/arm/boot/dts/qcom-apq8064.dtsi @@ -327,6 +327,7 @@ reg = <0x800000 0x4000>; gpio-controller; + gpio-ranges = <&tlmm_pinmux 0 0 90>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/qcom-apq8084.dtsi b/arch/arm/boot/dts/qcom-apq8084.dtsi index 0e1e98707e3f..d9481d083802 100644 --- a/arch/arm/boot/dts/qcom-apq8084.dtsi +++ b/arch/arm/boot/dts/qcom-apq8084.dtsi @@ -396,6 +396,7 @@ compatible = "qcom,apq8084-pinctrl"; reg = <0xfd510000 0x4000>; gpio-controller; + gpio-ranges = <&tlmm 0 0 147>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/qcom-ipq4019.dtsi b/arch/arm/boot/dts/qcom-ipq4019.dtsi index 10d112a4078e..9a81d2da87a0 100644 --- a/arch/arm/boot/dts/qcom-ipq4019.dtsi +++ b/arch/arm/boot/dts/qcom-ipq4019.dtsi @@ -146,6 +146,7 @@ compatible = "qcom,ipq4019-pinctrl"; reg = <0x01000000 0x300000>; gpio-controller; + gpio-ranges = <&tlmm 0 0 100>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/qcom-ipq8064.dtsi b/arch/arm/boot/dts/qcom-ipq8064.dtsi index 1e0a3b446f7a..26eab9a68d90 100644 --- a/arch/arm/boot/dts/qcom-ipq8064.dtsi +++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi @@ -108,6 +108,7 @@ reg = <0x800000 0x4000>; gpio-controller; + gpio-ranges = <&qcom_pinmux 0 0 69>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/qcom-mdm9615.dtsi b/arch/arm/boot/dts/qcom-mdm9615.dtsi index c852b69229c9..cfdaca5f259a 100644 --- a/arch/arm/boot/dts/qcom-mdm9615.dtsi +++ b/arch/arm/boot/dts/qcom-mdm9615.dtsi @@ -128,6 +128,7 @@ msmgpio: pinctrl@800000 { compatible = "qcom,mdm9615-pinctrl"; gpio-controller; + gpio-ranges = <&msmgpio 0 0 88>; #gpio-cells = <2>; interrupts = ; interrupt-controller; diff --git a/arch/arm/boot/dts/qcom-msm8660.dtsi b/arch/arm/boot/dts/qcom-msm8660.dtsi index 33030f9419fe..47cf9c4ca062 100644 --- a/arch/arm/boot/dts/qcom-msm8660.dtsi +++ b/arch/arm/boot/dts/qcom-msm8660.dtsi @@ -110,6 +110,7 @@ reg = <0x800000 0x4000>; gpio-controller; + gpio-ranges = <&tlmm 0 0 173>; #gpio-cells = <2>; interrupts = <0 16 0x4>; interrupt-controller; diff --git a/arch/arm/boot/dts/qcom-msm8960.dtsi b/arch/arm/boot/dts/qcom-msm8960.dtsi index 1733d8f40ab1..f6d8b1af5a8a 100644 --- a/arch/arm/boot/dts/qcom-msm8960.dtsi +++ b/arch/arm/boot/dts/qcom-msm8960.dtsi @@ -102,6 +102,7 @@ msmgpio: pinctrl@800000 { compatible = "qcom,msm8960-pinctrl"; gpio-controller; + gpio-ranges = <&msmgpio 0 0 152>; #gpio-cells = <2>; interrupts = <0 16 0x4>; interrupt-controller; diff --git a/arch/arm/boot/dts/qcom-msm8974.dtsi b/arch/arm/boot/dts/qcom-msm8974.dtsi index d9019a49b292..1250e071a6e2 100644 --- a/arch/arm/boot/dts/qcom-msm8974.dtsi +++ b/arch/arm/boot/dts/qcom-msm8974.dtsi @@ -696,6 +696,7 @@ compatible = "qcom,msm8974-pinctrl"; reg = <0xfd510000 0x4000>; gpio-controller; + gpio-ranges = <&msmgpio 0 0 146>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm64/boot/dts/qcom/ipq8074.dtsi b/arch/arm64/boot/dts/qcom/ipq8074.dtsi index 2bc5dec5614d..d2c36b467466 100644 --- a/arch/arm64/boot/dts/qcom/ipq8074.dtsi +++ b/arch/arm64/boot/dts/qcom/ipq8074.dtsi @@ -24,11 +24,12 @@ ranges = <0 0 0 0xffffffff>; compatible = "simple-bus"; - pinctrl@1000000 { + tlmm: pinctrl@1000000 { compatible = "qcom,ipq8074-pinctrl"; reg = <0x1000000 0x300000>; interrupts = ; gpio-controller; + gpio-ranges = <&tlmm 0 0 70>; #gpio-cells = <0x2>; interrupt-controller; #interrupt-cells = <0x2>; diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi index e51b04900726..e06cb90c8ec3 100644 --- a/arch/arm64/boot/dts/qcom/msm8916.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi @@ -281,6 +281,7 @@ reg = <0x1000000 0x300000>; interrupts = ; gpio-controller; + gpio-ranges = <&msmgpio 0 0 122>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm64/boot/dts/qcom/msm8992.dtsi b/arch/arm64/boot/dts/qcom/msm8992.dtsi index 171578747ed0..173b6bc60816 100644 --- a/arch/arm64/boot/dts/qcom/msm8992.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8992.dtsi @@ -179,6 +179,7 @@ reg = <0xfd510000 0x4000>; interrupts = ; gpio-controller; + gpio-ranges = <&msmgpio 0 0 146>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm64/boot/dts/qcom/msm8994.dtsi b/arch/arm64/boot/dts/qcom/msm8994.dtsi index f33c41d01c86..68705db4696b 100644 --- a/arch/arm64/boot/dts/qcom/msm8994.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8994.dtsi @@ -141,6 +141,7 @@ reg = <0xfd510000 0x4000>; interrupts = ; gpio-controller; + gpio-ranges = <&msmgpio 0 0 146>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi index 0a6f7952bbb1..18511e782cbd 100644 --- a/arch/arm64/boot/dts/qcom/msm8996.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi @@ -530,6 +530,7 @@ reg = <0x01010000 0x300000>; interrupts = ; gpio-controller; + gpio-ranges = <&msmgpio 0 0 150>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>;