[PATCH v3 3/3] ARM64: dts: add ngpios for vf610 compatible gpio controllers
Haibo Chen
haibo.chen at nxp.com
Mon May 19 20:46:14 PDT 2025
After commit da5dd31efd24 ("gpio: vf610: Switch to gpio-mmio"),
the vf610 GPIO driver no longer uses the static number 32 for
gc->ngpio. This allows users to configure the number of GPIOs
per port.
And some gpio controllers did have less pads. So add 'ngpios' here,
this can save some memory when request bitmap, and also show user
more accurate information when use gpio tools.
Besides, some gpio controllers have hole in the gpio ranges, so use
'gpio-reserved-ranges' to cover that, then the gpioinfo tool show the
correct result.
Reviewed-by: Frank Li <Frank.Li at nxp.com>
Signed-off-by: Haibo Chen <haibo.chen at nxp.com>
---
arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 3 +++
arch/arm64/boot/dts/freescale/imx93.dtsi | 4 ++++
arch/arm64/boot/dts/freescale/imx94.dtsi | 7 +++++++
arch/arm64/boot/dts/freescale/imx95.dtsi | 5 +++++
4 files changed, 19 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
index 2562a35286c208869d11d7fb970ac84638f45088..13b01f3aa2a4950c37e72e04f6bfb5995dc19178 100644
--- a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
@@ -686,6 +686,7 @@ gpioe: gpio at 2d000000 {
<&pcc4 IMX8ULP_CLK_PCTLE>;
clock-names = "gpio", "port";
gpio-ranges = <&iomuxc1 0 32 24>;
+ ngpios = <24>;
};
gpiof: gpio at 2d010000 {
@@ -701,6 +702,7 @@ gpiof: gpio at 2d010000 {
<&pcc4 IMX8ULP_CLK_PCTLF>;
clock-names = "gpio", "port";
gpio-ranges = <&iomuxc1 0 64 32>;
+ ngpios = <32>;
};
per_bridge5: bus at 2d800000 {
@@ -855,6 +857,7 @@ gpiod: gpio at 2e200000 {
<&pcc5 IMX8ULP_CLK_RGPIOD>;
clock-names = "gpio", "port";
gpio-ranges = <&iomuxc1 0 0 24>;
+ ngpios = <24>;
};
};
};
diff --git a/arch/arm64/boot/dts/freescale/imx93.dtsi b/arch/arm64/boot/dts/freescale/imx93.dtsi
index 64cd0776b43d38219fee312baadd4665674a141e..52be83a168d9ee6452a63039c89169d49b63eb60 100644
--- a/arch/arm64/boot/dts/freescale/imx93.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93.dtsi
@@ -1197,6 +1197,7 @@ gpio2: gpio at 43810000 {
<&clk IMX93_CLK_GPIO2_GATE>;
clock-names = "gpio", "port";
gpio-ranges = <&iomuxc 0 4 30>;
+ ngpios = <30>;
};
gpio3: gpio at 43820000 {
@@ -1213,6 +1214,7 @@ gpio3: gpio at 43820000 {
clock-names = "gpio", "port";
gpio-ranges = <&iomuxc 0 84 8>, <&iomuxc 8 66 18>,
<&iomuxc 26 34 2>, <&iomuxc 28 0 4>;
+ ngpios = <32>;
};
gpio4: gpio at 43830000 {
@@ -1228,6 +1230,7 @@ gpio4: gpio at 43830000 {
<&clk IMX93_CLK_GPIO4_GATE>;
clock-names = "gpio", "port";
gpio-ranges = <&iomuxc 0 38 28>, <&iomuxc 28 36 2>;
+ ngpios = <30>;
};
gpio1: gpio at 47400000 {
@@ -1243,6 +1246,7 @@ gpio1: gpio at 47400000 {
<&clk IMX93_CLK_GPIO1_GATE>;
clock-names = "gpio", "port";
gpio-ranges = <&iomuxc 0 92 16>;
+ ngpios = <16>;
};
ocotp: efuse at 47510000 {
diff --git a/arch/arm64/boot/dts/freescale/imx94.dtsi b/arch/arm64/boot/dts/freescale/imx94.dtsi
index 3661ea48d7d2994df7b02084e9681beb303aa133..b8ffc428e95be1938bf5e73316b4163acaa04701 100644
--- a/arch/arm64/boot/dts/freescale/imx94.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx94.dtsi
@@ -785,6 +785,7 @@ gpio2: gpio at 43810000 {
#gpio-cells = <2>;
gpio-controller;
gpio-ranges = <&scmi_iomuxc 0 4 32>;
+ ngpios = <32>;
};
gpio3: gpio at 43820000 {
@@ -797,6 +798,7 @@ gpio3: gpio at 43820000 {
#gpio-cells = <2>;
gpio-controller;
gpio-ranges = <&scmi_iomuxc 0 36 26>;
+ ngpios = <26>;
};
gpio4: gpio at 43840000 {
@@ -810,6 +812,7 @@ gpio4: gpio at 43840000 {
gpio-controller;
gpio-ranges = <&scmi_iomuxc 0 62 4>, <&scmi_iomuxc 4 0 4>,
<&scmi_iomuxc 8 140 12>, <&scmi_iomuxc 20 164 12>;
+ ngpios = <32>;
};
gpio5: gpio at 43850000 {
@@ -822,6 +825,7 @@ gpio5: gpio at 43850000 {
#gpio-cells = <2>;
gpio-controller;
gpio-ranges = <&scmi_iomuxc 0 108 32>;
+ ngpios = <32>;
};
gpio6: gpio at 43860000 {
@@ -834,6 +838,7 @@ gpio6: gpio at 43860000 {
#gpio-cells = <2>;
gpio-controller;
gpio-ranges = <&scmi_iomuxc 0 66 32>;
+ ngpios = <32>;
};
gpio7: gpio at 43870000 {
@@ -846,6 +851,8 @@ gpio7: gpio at 43870000 {
#gpio-cells = <2>;
gpio-controller;
gpio-ranges = <&scmi_iomuxc 0 98 10>, <&scmi_iomuxc 16 152 12>;
+ gpio-reserved-ranges = <10 6>;
+ ngpios = <28>;
};
aips1: bus at 44000000 {
diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi b/arch/arm64/boot/dts/freescale/imx95.dtsi
index 632631a2911224cadc16a943cdb467e091e43384..a2f4fcffcde59849bafcedced3ff317ca6c7cf78 100644
--- a/arch/arm64/boot/dts/freescale/imx95.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95.dtsi
@@ -1152,6 +1152,7 @@ gpio2: gpio at 43810000 {
<&scmi_clk IMX95_CLK_BUSWAKEUP>;
clock-names = "gpio", "port";
gpio-ranges = <&scmi_iomuxc 0 4 32>;
+ ngpios = <32>;
};
gpio3: gpio at 43820000 {
@@ -1168,6 +1169,7 @@ gpio3: gpio at 43820000 {
clock-names = "gpio", "port";
gpio-ranges = <&scmi_iomuxc 0 104 8>, <&scmi_iomuxc 8 74 18>,
<&scmi_iomuxc 26 42 2>, <&scmi_iomuxc 28 0 4>;
+ ngpios = <32>;
};
gpio4: gpio at 43840000 {
@@ -1183,6 +1185,7 @@ gpio4: gpio at 43840000 {
<&scmi_clk IMX95_CLK_BUSWAKEUP>;
clock-names = "gpio", "port";
gpio-ranges = <&scmi_iomuxc 0 46 28>, <&scmi_iomuxc 28 44 2>;
+ ngpios = <30>;
};
gpio5: gpio at 43850000 {
@@ -1198,6 +1201,7 @@ gpio5: gpio at 43850000 {
<&scmi_clk IMX95_CLK_BUSWAKEUP>;
clock-names = "gpio", "port";
gpio-ranges = <&scmi_iomuxc 0 92 12>, <&scmi_iomuxc 12 36 6>;
+ ngpios = <18>;
};
aips1: bus at 44000000 {
@@ -1508,6 +1512,7 @@ gpio1: gpio at 47400000 {
<&scmi_clk IMX95_CLK_M33>;
clock-names = "gpio", "port";
gpio-ranges = <&scmi_iomuxc 0 112 16>;
+ ngpios = <16>;
status = "disabled";
};
--
2.34.1
More information about the linux-arm-kernel
mailing list