summaryrefslogtreecommitdiff
path: root/drivers/gpio
diff options
context:
space:
mode:
authorPeng Fan <peng.fan@nxp.com>2023-10-01 11:27:55 +0300
committerBartosz Golaszewski <bartosz.golaszewski@linaro.org>2023-10-05 20:53:00 +0300
commit76bc907b142cca4a043e0a18be4d8a4e6d2df328 (patch)
treef74664785135aefaebc59ff5b8231ce50689cb12 /drivers/gpio
parent2b575631fe5f4e7948954e70fcff409b67ed42c3 (diff)
downloadlinux-76bc907b142cca4a043e0a18be4d8a4e6d2df328.tar.xz
gpio: vf610: add i.MX8ULP of_device_id entry
i.MX8ULP/93 GPIO supports similar feature as i.MX7ULP GPIO, but i.MX8ULP is actually not hardware compatible with i.MX7ULP. i.MX8ULP only has one register base, not two bases. i.MX8ULP and i.MX93 actually has two interrupts for each gpio controller, one for Trustzone non-secure world, one for secure world. Although the Linux Kernel driver gpio-vf610.c could work with fsl,imx7ulp-gpio compatible, it is based on some tricks did in device tree with some offset added to base address. Add a new of_device_id entry for i.MX8ULP. But to make the driver could also support old bindings, check the compatible string first, before check the device data. Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-vf610.c47
1 files changed, 40 insertions, 7 deletions
diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c
index dbc7ba0ee72c..8e12706c0b22 100644
--- a/drivers/gpio/gpio-vf610.c
+++ b/drivers/gpio/gpio-vf610.c
@@ -25,6 +25,7 @@
struct fsl_gpio_soc_data {
/* SoCs has a Port Data Direction Register (PDDR) */
bool have_paddr;
+ bool have_dual_base;
};
struct vf610_gpio_port {
@@ -60,13 +61,26 @@ struct vf610_gpio_port {
#define PORT_INT_EITHER_EDGE 0xb
#define PORT_INT_LOGIC_ONE 0xc
+#define IMX8ULP_GPIO_BASE_OFF 0x40
+#define IMX8ULP_BASE_OFF 0x80
+
+static const struct fsl_gpio_soc_data vf610_data = {
+ .have_dual_base = true,
+};
+
static const struct fsl_gpio_soc_data imx_data = {
.have_paddr = true,
+ .have_dual_base = true,
+};
+
+static const struct fsl_gpio_soc_data imx8ulp_data = {
+ .have_paddr = true,
};
static const struct of_device_id vf610_gpio_dt_ids[] = {
- { .compatible = "fsl,vf610-gpio", .data = NULL, },
+ { .compatible = "fsl,vf610-gpio", .data = &vf610_data },
{ .compatible = "fsl,imx7ulp-gpio", .data = &imx_data, },
+ { .compatible = "fsl,imx8ulp-gpio", .data = &imx8ulp_data, },
{ /* sentinel */ }
};
@@ -263,19 +277,38 @@ static int vf610_gpio_probe(struct platform_device *pdev)
struct gpio_irq_chip *girq;
int i;
int ret;
+ bool dual_base;
port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
if (!port)
return -ENOMEM;
port->sdata = of_device_get_match_data(dev);
- port->base = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(port->base))
- return PTR_ERR(port->base);
- port->gpio_base = devm_platform_ioremap_resource(pdev, 1);
- if (IS_ERR(port->gpio_base))
- return PTR_ERR(port->gpio_base);
+ dual_base = port->sdata->have_dual_base;
+
+ /* support old compatible strings */
+ if (device_is_compatible(dev, "fsl,imx7ulp-gpio") &&
+ (device_is_compatible(dev, "fsl,imx93-gpio") ||
+ (device_is_compatible(dev, "fsl,imx8ulp-gpio"))))
+ dual_base = true;
+
+ if (dual_base) {
+ port->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(port->base))
+ return PTR_ERR(port->base);
+
+ port->gpio_base = devm_platform_ioremap_resource(pdev, 1);
+ if (IS_ERR(port->gpio_base))
+ return PTR_ERR(port->gpio_base);
+ } else {
+ port->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(port->base))
+ return PTR_ERR(port->base);
+
+ port->gpio_base = port->base + IMX8ULP_GPIO_BASE_OFF;
+ port->base = port->base + IMX8ULP_BASE_OFF;
+ }
port->irq = platform_get_irq(pdev, 0);
if (port->irq < 0)