[U-Boot] [PATCH v2 05/16] dt-bindings: pinctrl: stm32: add new entry for package information
Patrick Delaunay
patrick.delaunay at st.com
Fri Jul 5 15:20:12 UTC 2019
Add "st,package" entry. Possibles values are:
-STM32MP_PKG_AA for LFBGA448 (18*18) package
-STM32MP_PKG_AB for LFBGA354 (16*16) package
-STM32MP_PKG_AC for TFBGA361 (12*12) package
-STM32MP_PKG_AD for TFBGA257 (10*10) package
see Linux commit 966d9b928f626a54a0c27c0fdae1e3dfe9bab416
for v5.2-rc1
Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---
Changes in v2: None
.../pinctrl/st,stm32-pinctrl.txt | 101 ++++++++++++++++++---
include/dt-bindings/pinctrl/stm32-pinfunc.h | 6 ++
2 files changed, 94 insertions(+), 13 deletions(-)
diff --git a/doc/device-tree-bindings/pinctrl/st,stm32-pinctrl.txt b/doc/device-tree-bindings/pinctrl/st,stm32-pinctrl.txt
index c41ae91..0016925 100644
--- a/doc/device-tree-bindings/pinctrl/st,stm32-pinctrl.txt
+++ b/doc/device-tree-bindings/pinctrl/st,stm32-pinctrl.txt
@@ -8,8 +8,13 @@ controllers onto these pads.
Pin controller node:
Required properies:
- compatible: value should be one of the following:
- (a) "st,stm32f429-pinctrl"
- (b) "st,stm32f746-pinctrl"
+ "st,stm32f429-pinctrl"
+ "st,stm32f469-pinctrl"
+ "st,stm32f746-pinctrl"
+ "st,stm32f769-pinctrl"
+ "st,stm32h743-pinctrl"
+ "st,stm32mp157-pinctrl"
+ "st,stm32mp157-z-pinctrl"
- #address-cells: The value of this property must be 1
- #size-cells : The value of this property must be 1
- ranges : defines mapping between pin controller node (parent) to
@@ -32,13 +37,30 @@ Required properties:
Optional properties:
- reset: : Reference to the reset controller
- - interrupt-parent: phandle of the interrupt parent to which the external
- GPIO interrupts are forwarded to.
- - st,syscfg: Should be phandle/offset pair. The phandle to the syscon node
- which includes IRQ mux selection register, and the offset of the IRQ mux
- selection register.
+ - st,syscfg: Should be phandle/offset/mask.
+ -The phandle to the syscon node which includes IRQ mux selection register.
+ -The offset of the IRQ mux selection register
+ -The field mask of IRQ mux, needed if different of 0xf.
+ - gpio-ranges: Define a dedicated mapping between a pin-controller and
+ a gpio controller. Format is <&phandle a b c> with:
+ -(phandle): phandle of pin-controller.
+ -(a): gpio base offset in range.
+ -(b): pin base offset in range.
+ -(c): gpio count in range
+ This entry has to be used either if there are holes inside a bank:
+ GPIOB0/B1/B2/B14/B15 (see example 2)
+ or if banks are not contiguous:
+ GPIOA/B/C/E...
+ NOTE: If "gpio-ranges" is used for a gpio controller, all gpio-controller
+ have to use a "gpio-ranges" entry.
+ More details in Documentation/devicetree/bindings/gpio/gpio.txt.
+ - st,bank-ioport: should correspond to the EXTI IOport selection (EXTI line
+ used to select GPIOs as interrupts).
+ - hwlocks: reference to a phandle of a hardware spinlock provider node.
+ - st,package: Indicates the SOC package used.
+ More details in include/dt-bindings/pinctrl/stm32-pinfunc.h
-Example:
+Example 1:
#include <dt-bindings/pinctrl/stm32f429-pinfunc.h>
...
@@ -60,6 +82,43 @@ Example:
pin-functions nodes follow...
};
+Example 2:
+#include <dt-bindings/pinctrl/stm32f429-pinfunc.h>
+...
+
+ pinctrl: pin-controller {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "st,stm32f429-pinctrl";
+ ranges = <0 0x40020000 0x3000>;
+ pins-are-numbered;
+
+ gpioa: gpio at 40020000 {
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0x0 0x400>;
+ resets = <&reset_ahb1 0>;
+ st,bank-name = "GPIOA";
+ gpio-ranges = <&pinctrl 0 0 16>;
+ };
+
+ gpiob: gpio at 40020400 {
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0x0 0x400>;
+ resets = <&reset_ahb1 0>;
+ st,bank-name = "GPIOB";
+ ngpios = 4;
+ gpio-ranges = <&pinctrl 0 16 3>,
+ <&pinctrl 14 30 2>;
+ };
+
+
+ ...
+ pin-functions nodes follow...
+ };
+
+
Contents of function subnode node:
----------------------------------
Subnode format
@@ -83,14 +142,31 @@ Required properties:
- port: The gpio port index (PA = 0, PB = 1, ..., PK = 11)
- line: The line offset within the port (PA0 = 0, PA1 = 1, ..., PA15 = 15)
- function: The function number, can be:
- * 0 : GPIO IN
+ * 0 : GPIO
* 1 : Alternate Function 0
* 2 : Alternate Function 1
* 3 : Alternate Function 2
* ...
* 16 : Alternate Function 15
* 17 : Analog
- * 18 : GPIO OUT
+
+ To simplify the usage, macro is available to generate "pinmux" field.
+ This macro is available here:
+ - include/dt-bindings/pinctrl/stm32-pinfunc.h
+
+ Some examples of using macro:
+ /* GPIO A9 set as alernate function 2 */
+ ... {
+ pinmux = <STM32_PINMUX('A', 9, AF2)>;
+ };
+ /* GPIO A9 set as GPIO */
+ ... {
+ pinmux = <STM32_PINMUX('A', 9, GPIO)>;
+ };
+ /* GPIO A9 set as analog */
+ ... {
+ pinmux = <STM32_PINMUX('A', 9, ANALOG)>;
+ };
Optional properties:
- GENERIC_PINCONFIG: is the generic pinconfig options to use.
@@ -114,13 +190,13 @@ pin-controller {
...
usart1_pins_a: usart1 at 0 {
pins1 {
- pinmux = <STM32F429_PA9_FUNC_USART1_TX>;
+ pinmux = <STM32_PINMUX('A', 9, AF7)>;
bias-disable;
drive-push-pull;
slew-rate = <0>;
};
pins2 {
- pinmux = <STM32F429_PA10_FUNC_USART1_RX>;
+ pinmux = <STM32_PINMUX('A', 10, AF7)>;
bias-disable;
};
};
@@ -129,5 +205,4 @@ pin-controller {
&usart1 {
pinctrl-0 = <&usart1_pins_a>;
pinctrl-names = "default";
- status = "okay";
};
diff --git a/include/dt-bindings/pinctrl/stm32-pinfunc.h b/include/dt-bindings/pinctrl/stm32-pinfunc.h
index b5a2174..e6fb8ad 100644
--- a/include/dt-bindings/pinctrl/stm32-pinfunc.h
+++ b/include/dt-bindings/pinctrl/stm32-pinfunc.h
@@ -32,5 +32,11 @@
#define STM32_PINMUX(port, line, mode) (((PIN_NO(port, line)) << 8) | (mode))
+/* package information */
+#define STM32MP_PKG_AA 0x1
+#define STM32MP_PKG_AB 0x2
+#define STM32MP_PKG_AC 0x4
+#define STM32MP_PKG_AD 0x8
+
#endif /* _DT_BINDINGS_STM32_PINFUNC_H */
--
2.7.4
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