Add support for all bcm2711 GPIOs

2 files changed, 870 insertions, 0 deletions

diff --git a/arm64-pinctrl-bcm2835-Add-support-for-all-BCM2711-GPIOs.patch b/arm64-pinctrl-bcm2835-Add-support-for-all-BCM2711-GPIOs.patch
new file mode 100644
index 000000000..87ef3d967
--- /dev/null
+++ b/arm64-pinctrl-bcm2835-Add-support-for-all-BCM2711-GPIOs.patch
@@ -0,0 +1,868 @@
+From patchwork Mon Jan 27 18:15:05 2020
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
+ Florian Fainelli <f.fainelli@gmail.com>,
+ Linus Walleij <linus.walleij@linaro.org>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>
+Subject: [RFC PATCH 1/4] pinctrl: bcm2835: Drop unused define
+Date: Mon, 27 Jan 2020 19:15:05 +0100
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>, linux-gpio@vger.kernel.org,
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+
+There is no usage for this define, so drop it.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+index 0de1a3a..3fc2638 100644
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -40,9 +40,6 @@
+ #define BCM2835_NUM_BANKS 2
+ #define BCM2835_NUM_IRQS  3
+ 
+-#define BCM2835_PIN_BITMAP_SZ \
+-	DIV_ROUND_UP(BCM2835_NUM_GPIOS, sizeof(unsigned long) * 8)
+-
+ /* GPIO register offsets */
+ #define GPFSEL0		0x0	/* Function Select */
+ #define GPSET0		0x1c	/* Pin Output Set */
+
+From patchwork Mon Jan 27 18:15:06 2020
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
+ Florian Fainelli <f.fainelli@gmail.com>,
+ Linus Walleij <linus.walleij@linaro.org>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>
+Subject: [RFC PATCH 2/4] pinctrl: bcm2835: Refactor platform data
+Date: Mon, 27 Jan 2020 19:15:06 +0100
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+
+This prepares the platform data to be easier to extend for more GPIOs.
+Except of this there is no functional change.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 57 +++++++++++++++++++++++++++--------
+ 1 file changed, 44 insertions(+), 13 deletions(-)
+
+diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+index 3fc2638..ffd069a 100644
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -82,6 +82,7 @@ struct bcm2835_pinctrl {
+ 
+ 	struct pinctrl_dev *pctl_dev;
+ 	struct gpio_chip gpio_chip;
++	struct pinctrl_desc pctl_desc;
+ 	struct pinctrl_gpio_range gpio_range;
+ 
+ 	raw_spinlock_t irq_lock[BCM2835_NUM_BANKS];
+@@ -1051,7 +1052,7 @@ static const struct pinconf_ops bcm2711_pinconf_ops = {
+ 	.pin_config_set = bcm2711_pinconf_set,
+ };
+ 
+-static struct pinctrl_desc bcm2835_pinctrl_desc = {
++static const struct pinctrl_desc bcm2835_pinctrl_desc = {
+ 	.name = MODULE_NAME,
+ 	.pins = bcm2835_gpio_pins,
+ 	.npins = ARRAY_SIZE(bcm2835_gpio_pins),
+@@ -1061,19 +1062,47 @@ static struct pinctrl_desc bcm2835_pinctrl_desc = {
+ 	.owner = THIS_MODULE,
+ };
+ 
+-static struct pinctrl_gpio_range bcm2835_pinctrl_gpio_range = {
++static const struct pinctrl_desc bcm2711_pinctrl_desc = {
++	.name = MODULE_NAME,
++	.pins = bcm2835_gpio_pins,
++	.npins = ARRAY_SIZE(bcm2835_gpio_pins),
++	.pctlops = &bcm2835_pctl_ops,
++	.pmxops = &bcm2835_pmx_ops,
++	.confops = &bcm2711_pinconf_ops,
++	.owner = THIS_MODULE,
++};
++
++static const struct pinctrl_gpio_range bcm2835_pinctrl_gpio_range = {
+ 	.name = MODULE_NAME,
+ 	.npins = BCM2835_NUM_GPIOS,
+ };
+ 
++struct bcm_plat_data {
++	const struct gpio_chip *gpio_chip;
++	const struct pinctrl_desc *pctl_desc;
++	const struct pinctrl_gpio_range *gpio_range;
++};
++
++static const struct bcm_plat_data bcm2835_plat_data = {
++	.gpio_chip = &bcm2835_gpio_chip,
++	.pctl_desc = &bcm2835_pinctrl_desc,
++	.gpio_range = &bcm2835_pinctrl_gpio_range,
++};
++
++static const struct bcm_plat_data bcm2711_plat_data = {
++	.gpio_chip = &bcm2835_gpio_chip,
++	.pctl_desc = &bcm2711_pinctrl_desc,
++	.gpio_range = &bcm2835_pinctrl_gpio_range,
++};
++
+ static const struct of_device_id bcm2835_pinctrl_match[] = {
+ 	{
+ 		.compatible = "brcm,bcm2835-gpio",
+-		.data = &bcm2835_pinconf_ops,
++		.data = &bcm2835_plat_data,
+ 	},
+ 	{
+ 		.compatible = "brcm,bcm2711-gpio",
+-		.data = &bcm2711_pinconf_ops,
++		.data = &bcm2711_plat_data,
+ 	},
+ 	{}
+ };
+@@ -1083,6 +1112,7 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev)
+ 	struct device *dev = &pdev->dev;
+ 	struct device_node *np = dev->of_node;
+ 	struct bcm2835_pinctrl *pc;
++	struct bcm_plat_data *pdata;
+ 	struct gpio_irq_chip *girq;
+ 	struct resource iomem;
+ 	int err, i;
+@@ -1108,7 +1138,13 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev)
+ 	if (IS_ERR(pc->base))
+ 		return PTR_ERR(pc->base);
+ 
+-	pc->gpio_chip = bcm2835_gpio_chip;
++	match = of_match_node(bcm2835_pinctrl_match, pdev->dev.of_node);
++	if (!match)
++		return -EINVAL;
++
++	pdata = (struct bcm_plat_data *)match->data;
++
++	memcpy(&pc->gpio_chip, pdata->gpio_chip, sizeof(pc->gpio_chip));
+ 	pc->gpio_chip.parent = dev;
+ 	pc->gpio_chip.of_node = np;
+ 
+@@ -1159,19 +1195,14 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev)
+ 		return err;
+ 	}
+ 
+-	match = of_match_node(bcm2835_pinctrl_match, pdev->dev.of_node);
+-	if (match) {
+-		bcm2835_pinctrl_desc.confops =
+-			(const struct pinconf_ops *)match->data;
+-	}
+-
+-	pc->pctl_dev = devm_pinctrl_register(dev, &bcm2835_pinctrl_desc, pc);
++	memcpy(&pc->pctl_desc, pdata->pctl_desc, sizeof(pc->pctl_desc));
++	pc->pctl_dev = devm_pinctrl_register(dev, &pc->pctl_desc, pc);
+ 	if (IS_ERR(pc->pctl_dev)) {
+ 		gpiochip_remove(&pc->gpio_chip);
+ 		return PTR_ERR(pc->pctl_dev);
+ 	}
+ 
+-	pc->gpio_range = bcm2835_pinctrl_gpio_range;
++	memcpy(&pc->gpio_range, pdata->gpio_range, sizeof(pc->gpio_range));
+ 	pc->gpio_range.base = pc->gpio_chip.base;
+ 	pc->gpio_range.gc = &pc->gpio_chip;
+ 	pinctrl_add_gpio_range(pc->pctl_dev, &pc->gpio_range);
+
+From patchwork Mon Jan 27 18:15:07 2020
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
+ Florian Fainelli <f.fainelli@gmail.com>,
+ Linus Walleij <linus.walleij@linaro.org>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>
+Subject: [RFC PATCH 3/4] pinctrl: bcm2835: Add support for all GPIOs on
+ BCM2711
+Date: Mon, 27 Jan 2020 19:15:07 +0100
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+
+The BCM2711 supports 58 GPIOs. So extend pinctrl and GPIOs accordingly.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 54 +++++++++++++++++++++++++++--------
+ 1 file changed, 42 insertions(+), 12 deletions(-)
+
+diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+index ffd069a..41e7bf9 100644
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -37,6 +37,7 @@
+ 
+ #define MODULE_NAME "pinctrl-bcm2835"
+ #define BCM2835_NUM_GPIOS 54
++#define BCM2711_NUM_GPIOS 58
+ #define BCM2835_NUM_BANKS 2
+ #define BCM2835_NUM_IRQS  3
+ 
+@@ -78,7 +79,7 @@ struct bcm2835_pinctrl {
+ 
+ 	/* note: locking assumes each bank will have its own unsigned long */
+ 	unsigned long enabled_irq_map[BCM2835_NUM_BANKS];
+-	unsigned int irq_type[BCM2835_NUM_GPIOS];
++	unsigned int irq_type[BCM2711_NUM_GPIOS];
+ 
+ 	struct pinctrl_dev *pctl_dev;
+ 	struct gpio_chip gpio_chip;
+@@ -145,6 +146,10 @@ static struct pinctrl_pin_desc bcm2835_gpio_pins[] = {
+ 	BCM2835_GPIO_PIN(51),
+ 	BCM2835_GPIO_PIN(52),
+ 	BCM2835_GPIO_PIN(53),
++	BCM2835_GPIO_PIN(54),
++	BCM2835_GPIO_PIN(55),
++	BCM2835_GPIO_PIN(56),
++	BCM2835_GPIO_PIN(57),
+ };
+ 
+ /* one pin per group */
+@@ -203,6 +208,10 @@ static const char * const bcm2835_gpio_groups[] = {
+ 	"gpio51",
+ 	"gpio52",
+ 	"gpio53",
++	"gpio54",
++	"gpio55",
++	"gpio56",
++	"gpio57",
+ };
+ 
+ enum bcm2835_fsel {
+@@ -353,6 +362,22 @@ static const struct gpio_chip bcm2835_gpio_chip = {
+ 	.can_sleep = false,
+ };
+ 
++static const struct gpio_chip bcm2711_gpio_chip = {
++	.label = "pinctrl-bcm2711",
++	.owner = THIS_MODULE,
++	.request = gpiochip_generic_request,
++	.free = gpiochip_generic_free,
++	.direction_input = bcm2835_gpio_direction_input,
++	.direction_output = bcm2835_gpio_direction_output,
++	.get_direction = bcm2835_gpio_get_direction,
++	.get = bcm2835_gpio_get,
++	.set = bcm2835_gpio_set,
++	.set_config = gpiochip_generic_config,
++	.base = -1,
++	.ngpio = BCM2711_NUM_GPIOS,
++	.can_sleep = false,
++};
++
+ static void bcm2835_gpio_irq_handle_bank(struct bcm2835_pinctrl *pc,
+ 					 unsigned int bank, u32 mask)
+ {
+@@ -399,7 +424,7 @@ static void bcm2835_gpio_irq_handler(struct irq_desc *desc)
+ 		bcm2835_gpio_irq_handle_bank(pc, 0, 0xf0000000);
+ 		bcm2835_gpio_irq_handle_bank(pc, 1, 0x00003fff);
+ 		break;
+-	case 2: /* IRQ2 covers GPIOs 46-53 */
++	case 2: /* IRQ2 covers GPIOs 46-57 */
+ 		bcm2835_gpio_irq_handle_bank(pc, 1, 0x003fc000);
+ 		break;
+ 	}
+@@ -618,7 +643,7 @@ static struct irq_chip bcm2835_gpio_irq_chip = {
+ 
+ static int bcm2835_pctl_get_groups_count(struct pinctrl_dev *pctldev)
+ {
+-	return ARRAY_SIZE(bcm2835_gpio_groups);
++	return BCM2835_NUM_GPIOS;
+ }
+ 
+ static const char *bcm2835_pctl_get_group_name(struct pinctrl_dev *pctldev,
+@@ -776,7 +801,7 @@ static int bcm2835_pctl_dt_node_to_map(struct pinctrl_dev *pctldev,
+ 		err = of_property_read_u32_index(np, "brcm,pins", i, &pin);
+ 		if (err)
+ 			goto out;
+-		if (pin >= ARRAY_SIZE(bcm2835_gpio_pins)) {
++		if (pin >= pc->pctl_desc.npins) {
+ 			dev_err(pc->dev, "%pOF: invalid brcm,pins value %d\n",
+ 				np, pin);
+ 			err = -EINVAL;
+@@ -852,7 +877,7 @@ static int bcm2835_pmx_get_function_groups(struct pinctrl_dev *pctldev,
+ {
+ 	/* every pin can do every function */
+ 	*groups = bcm2835_gpio_groups;
+-	*num_groups = ARRAY_SIZE(bcm2835_gpio_groups);
++	*num_groups = BCM2835_NUM_GPIOS;
+ 
+ 	return 0;
+ }
+@@ -1055,7 +1080,7 @@ static const struct pinconf_ops bcm2711_pinconf_ops = {
+ static const struct pinctrl_desc bcm2835_pinctrl_desc = {
+ 	.name = MODULE_NAME,
+ 	.pins = bcm2835_gpio_pins,
+-	.npins = ARRAY_SIZE(bcm2835_gpio_pins),
++	.npins = BCM2835_NUM_GPIOS,
+ 	.pctlops = &bcm2835_pctl_ops,
+ 	.pmxops = &bcm2835_pmx_ops,
+ 	.confops = &bcm2835_pinconf_ops,
+@@ -1063,9 +1088,9 @@ static const struct pinctrl_desc bcm2835_pinctrl_desc = {
+ };
+ 
+ static const struct pinctrl_desc bcm2711_pinctrl_desc = {
+-	.name = MODULE_NAME,
++	.name = "pinctrl-bcm2711",
+ 	.pins = bcm2835_gpio_pins,
+-	.npins = ARRAY_SIZE(bcm2835_gpio_pins),
++	.npins = BCM2711_NUM_GPIOS,
+ 	.pctlops = &bcm2835_pctl_ops,
+ 	.pmxops = &bcm2835_pmx_ops,
+ 	.confops = &bcm2711_pinconf_ops,
+@@ -1077,6 +1102,11 @@ static const struct pinctrl_gpio_range bcm2835_pinctrl_gpio_range = {
+ 	.npins = BCM2835_NUM_GPIOS,
+ };
+ 
++static const struct pinctrl_gpio_range bcm2711_pinctrl_gpio_range = {
++	.name = "pinctrl-bcm2711",
++	.npins = BCM2711_NUM_GPIOS,
++};
++
+ struct bcm_plat_data {
+ 	const struct gpio_chip *gpio_chip;
+ 	const struct pinctrl_desc *pctl_desc;
+@@ -1090,9 +1120,9 @@ static const struct bcm_plat_data bcm2835_plat_data = {
+ };
+ 
+ static const struct bcm_plat_data bcm2711_plat_data = {
+-	.gpio_chip = &bcm2835_gpio_chip,
++	.gpio_chip = &bcm2711_gpio_chip,
+ 	.pctl_desc = &bcm2711_pinctrl_desc,
+-	.gpio_range = &bcm2835_pinctrl_gpio_range,
++	.gpio_range = &bcm2711_pinctrl_gpio_range,
+ };
+ 
+ static const struct of_device_id bcm2835_pinctrl_match[] = {
+@@ -1118,8 +1148,8 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev)
+ 	int err, i;
+ 	const struct of_device_id *match;
+ 
+-	BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_pins) != BCM2835_NUM_GPIOS);
+-	BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_groups) != BCM2835_NUM_GPIOS);
++	BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_pins) != BCM2711_NUM_GPIOS);
++	BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_groups) != BCM2711_NUM_GPIOS);
+ 
+ 	pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL);
+ 	if (!pc)
+
+From patchwork Mon Jan 27 18:15:08 2020
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
+ Florian Fainelli <f.fainelli@gmail.com>,
+ Linus Walleij <linus.walleij@linaro.org>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>
+Subject: [RFC PATCH 4/4] ARM: dts: bcm2711-rpi-4-b: Add SoC GPIO labels
+Date: Mon, 27 Jan 2020 19:15:08 +0100
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>, linux-gpio@vger.kernel.org,
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+ linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
+
+This adds the labels for all the SoC GPIOs on the Raspberry Pi 4.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 74 +++++++++++++++++++++++++++++++++++
+ 1 file changed, 74 insertions(+)
+
+diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+index 1b5a835..6607e2e 100644
+--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+@@ -71,6 +71,80 @@
+ 	};
+ };
+ 
++&gpio {
++	/*
++	 * Parts taken from rpi_SCH_4b_4p0_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD1",
++			  "RXD1",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "RGMII_MDIO",
++			  "RGMIO_MDC",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  /* Shared with SPI flash */
++			  "PWM0_MISO",
++			  "PWM1_MOSI",
++			  "STATUS_LED_G_CLK",
++			  "SPIFLASH_CE_N",
++			  "SDA0",
++			  "SCL0",
++			  "RGMII_RXCLK",
++			  "RGMII_RXCTL",
++			  "RGMII_RXD0",
++			  "RGMII_RXD1",
++			  "RGMII_RXD2",
++			  "RGMII_RXD3",
++			  "RGMII_TXCLK",
++			  "RGMII_TXCTL",
++			  "RGMII_TXD0",
++			  "RGMII_TXD1",
++			  "RGMII_TXD2",
++			  "RGMII_TXD3";
++};
++
+ &pwm1 {
+ 	pinctrl-names = "default";
+ 	pinctrl-0 = <&pwm1_0_gpio40 &pwm1_1_gpio41>;
diff --git a/kernel.spec b/kernel.spec
index b5d8cd351..020058a95 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -825,6 +825,8 @@ Patch304: ARM-tegra-usb-no-reset.patch
 Patch310: Raspberry-Pi-4-PCIe-support.patch
 # https://patchwork.kernel.org/patch/11299997/
 Patch312: bcm283x-gpu-drm-v3d-Add-ARCH_BCM2835-to-DRM_V3D-Kconfig.patch
+# https://patchwork.kernel.org/cover/11353083/
+Patch313: arm64-pinctrl-bcm2835-Add-support-for-all-BCM2711-GPIOs.patch
 
 # Tegra bits
 Patch320: arm64-tegra-jetson-tx1-fixes.patch