dt-bindings: pinctrl: qcom: add gpio-ranges, gpio-reserved-ranges

This patch adds the gpio-ranges and gpio-reserved-ranges property
definitions to the binding text files supported by the pinctrl-msm
driver framework.

gpio-ranges:
For DT-based platforms the pinctrl-msm framework currently relies
on the deprecated-for-DT gpiochip_add_pin_range() function to add
the range of GPIOs to be handled by the pin controller. Due to
interactions within gpiolib code, this causes the pinctrl-msm
driver to bail out (-517) during boot when a gpio-hog is declared.
This can be fatal and cause the system to not boot or reset
(for a detailed explanation and call-trace, refer to patch:
"pinctrl: msm: fix gpio-hog related boot issues" in this series).

gpio-reserved-ranges:
The binding has been added as a precaution since the TrustZone
firmware (aka QSEE), which is running as the hypervisor, might
have reserved certain, but undisclosed pins. Hence reading or
writing to the registers for those pins will cause an
XPU violation and this subsequently crashes the kernel.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt
index a752a47..c2dbb3e 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt
@@ -10,6 +10,11 @@ Required properties:
 - #gpio-cells : Should be two.
                 The first cell is the gpio pin number and the
                 second cell is used for optional parameters.
+- gpio-ranges: see ../gpio/gpio.txt
+
+Optional properties:
+
+- gpio-reserved-ranges: see ../gpio/gpio.txt
 
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
@@ -67,6 +72,7 @@ Example:
 
                pinctrl-names = "default";
                pinctrl-0 = <&gsbi5_uart_default>;
+               gpio-ranges = <&msmgpio 0 0 90>;
 
                gsbi5_uart_default: gsbi5_uart_default {
                        mux {

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,apq8084-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,apq8084-pinctrl.txt
index c4ea61a..68e93d5 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,apq8084-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,apq8084-pinctrl.txt
@@ -40,6 +40,14 @@ MSM8960 platform.
        Definition: must be 2. Specifying the pin number and flags, as defined
                    in <dt-bindings/gpio/gpio.h>
 
+- gpio-ranges:
+       Usage: required
+       Definition:  see ../gpio/gpio.txt
+
+- gpio-reserved-ranges:
+       Usage: optional
+       Definition: see ../gpio/gpio.txt
+
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
 
@@ -154,6 +162,7 @@ Example:
 
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&tlmm 0 0 147>;
                interrupt-controller;
                #interrupt-cells = <2>;
                interrupts = <0 208 0>;

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,ipq4019-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,ipq4019-pinctrl.txt
index 93374f4..991be0c 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,ipq4019-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,ipq4019-pinctrl.txt
@@ -13,6 +13,11 @@ Required properties:
 - #gpio-cells : Should be two.
                 The first cell is the gpio pin number and the
                 second cell is used for optional parameters.
+- gpio-ranges: see ../gpio/gpio.txt
+
+Optional properties:
+
+- gpio-reserved-ranges: see ../gpio/gpio.txt
 
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
@@ -64,6 +69,7 @@ Example:
 
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&tlmm 0 0 100>;
                interrupt-controller;
                #interrupt-cells = <2>;
                interrupts = <0 208 0>;

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,ipq8064-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,ipq8064-pinctrl.txt
index 6e88e91..7ed56a1 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,ipq8064-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,ipq8064-pinctrl.txt
@@ -10,6 +10,11 @@ Required properties:
 - #gpio-cells : Should be two.
                 The first cell is the gpio pin number and the
                 second cell is used for optional parameters.
+- gpio-ranges: see ../gpio/gpio.txt
+
+Optional properties:
+
+- gpio-reserved-ranges: see ../gpio/gpio.txt
 
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
@@ -67,6 +72,7 @@ Example:
 
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&pinmux 0 0 69>;
                interrupt-controller;
                #interrupt-cells = <2>;
                interrupts = <0 32 0x4>;

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,ipq8074-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,ipq8074-pinctrl.txt
index 407b944..6dd72f8 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,ipq8074-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,ipq8074-pinctrl.txt
@@ -40,6 +40,14 @@ IPQ8074 platform.
        Definition: must be 2. Specifying the pin number and flags, as defined
                    in <dt-bindings/gpio/gpio.h>
 
+- gpio-ranges:
+       Usage: required
+       Definition:  see ../gpio/gpio.txt
+
+- gpio-reserved-ranges:
+       Usage: optional
+       Definition: see ../gpio/gpio.txt
+
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
 
@@ -148,6 +156,7 @@ Example:
                interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&tlmm 0 0 70>;
                interrupt-controller;
                #interrupt-cells = <2>;
 

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,mdm9615-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,mdm9615-pinctrl.txt
index 1b52f01..86ecdcf 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,mdm9615-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,mdm9615-pinctrl.txt
@@ -40,6 +40,14 @@ MDM9615 platform.
        Definition: must be 2. Specifying the pin number and flags, as defined
                    in <dt-bindings/gpio/gpio.h>
 
+- gpio-ranges:
+       Usage: required
+       Definition:  see ../gpio/gpio.txt
+
+- gpio-reserved-ranges:
+       Usage: optional
+       Definition: see ../gpio/gpio.txt
+
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
 
@@ -127,6 +135,7 @@ Example:
 
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&msmgpio 0 0 88>;
                interrupt-controller;
                #interrupt-cells = <2>;
                interrupts = <0 16 0x4>;

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8660-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,msm8660-pinctrl.txt
index df9a838..cdc4787 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8660-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8660-pinctrl.txt
@@ -10,6 +10,11 @@ Required properties:
 - #gpio-cells : Should be two.
                 The first cell is the gpio pin number and the
                 second cell is used for optional parameters.
+- gpio-ranges: see ../gpio/gpio.txt
+
+Optional properties:
+
+- gpio-reserved-ranges: see ../gpio/gpio.txt
 
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
@@ -62,6 +67,7 @@ Example:
 
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&msmgpio 0 0 173>;
                interrupt-controller;
                #interrupt-cells = <2>;
                interrupts = <0 16 0x4>;

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8916-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,msm8916-pinctrl.txt
index 498caff..195a7a0 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8916-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8916-pinctrl.txt
@@ -40,6 +40,14 @@ MSM8916 platform.
        Definition: must be 2. Specifying the pin number and flags, as defined
                    in <dt-bindings/gpio/gpio.h>
 
+- gpio-ranges:
+       Usage: required
+       Definition:  see ../gpio/gpio.txt
+
+- gpio-reserved-ranges:
+       Usage: optional
+       Definition: see ../gpio/gpio.txt
+
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
 
@@ -162,6 +170,7 @@ Example:
                interrupts = <0 208 0>;
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&tlmm 0 0 122>;
                interrupt-controller;
                #interrupt-cells = <2>;
 

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.txt
index eb8d8aa..5034eb6 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.txt
@@ -40,6 +40,14 @@ MSM8960 platform.
        Definition: must be 2. Specifying the pin number and flags, as defined
                    in <dt-bindings/gpio/gpio.h>
 
+- gpio-ranges:
+       Usage: required
+       Definition:  see ../gpio/gpio.txt
+
+- gpio-reserved-ranges:
+       Usage: optional
+       Definition: see ../gpio/gpio.txt
+
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
 
@@ -156,6 +164,7 @@ Example:
 
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&msmgpio 0 0 152>;
                interrupt-controller;
                #interrupt-cells = <2>;
                interrupts = <0 16 0x4>;

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8974-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,msm8974-pinctrl.txt
index 453bd7c..c22e6c4 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8974-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8974-pinctrl.txt
@@ -10,6 +10,11 @@ Required properties:
 - #gpio-cells : Should be two.
                 The first cell is the gpio pin number and the
                 second cell is used for optional parameters.
+- gpio-ranges: see ../gpio/gpio.txt
+
+Optional properties:
+
+- gpio-reserved-ranges: see ../gpio/gpio.txt
 
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
@@ -87,6 +92,7 @@ Example:
 
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&msmgpio 0 0 146>;
                interrupt-controller;
                #interrupt-cells = <2>;
                interrupts = <0 208 0>;

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8994-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,msm8994-pinctrl.txt
index 13cd629..f15443f 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8994-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8994-pinctrl.txt
@@ -42,6 +42,14 @@ MSM8994 platform.
        Definition: must be 2. Specifying the pin number and flags, as defined
                    in <dt-bindings/gpio/gpio.h>
 
+- gpio-ranges:
+       Usage: required
+       Definition:  see ../gpio/gpio.txt
+
+- gpio-reserved-ranges:
+       Usage: optional
+       Definition: see ../gpio/gpio.txt
+
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
 
@@ -160,6 +168,7 @@ Example:
                interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
                gpio-controller;
                #gpio-cells = <2>;
+               gpio-ranges = <&msmgpio 0 0 146>;
                interrupt-controller;
                #interrupt-cells = <2>;
 

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8996-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,msm8996-pinctrl.txt
index aaf01e9..fa97f60 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8996-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8996-pinctrl.txt
@@ -40,6 +40,14 @@ MSM8996 platform.
        Definition: must be 2. Specifying the pin number and flags, as defined
                    in <dt-bindings/gpio/gpio.h>
 
+- gpio-ranges:
+       Usage: required
+       Definition:  see ../gpio/gpio.txt
+
+- gpio-reserved-ranges:
+       Usage: optional
+       Definition: see ../gpio/gpio.txt
+
 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
 a general description of GPIO and interrupt bindings.
 
@@ -180,6 +188,7 @@ Example:
                reg = <0x01010000 0x300000>;
                interrupts = <0 208 0>;
                gpio-controller;
+               gpio-ranges = <&tlmm 0 0 150>;
                #gpio-cells = <2>;
                interrupt-controller;
                #interrupt-cells = <2>;