gpio: rockchip: add support for rk3588

Add V2.1 rockchip gpio controller type, which is part of the
RK3588 SoC.
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>

drivers/gpio/gpio-rockchip.c

@@ -27,6 +27,7 @@
 
 #define GPIO_TYPE_V1		(0)           /* GPIO Version ID reserved */
 #define GPIO_TYPE_V2		(0x01000C2B)  /* GPIO Version ID 0x01000C2B */
+#define GPIO_TYPE_V2_1		(0x0101157C)  /* GPIO Version ID 0x0101157C */
 
 static const struct rockchip_gpio_regs gpio_regs_v1 = {
 	.port_dr = 0x00,
@@ -664,7 +665,7 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank)
 	id = readl(bank->reg_base + gpio_regs_v2.version_id);
 
 	/* If not gpio v2, that is default to v1. */
-	if (id == GPIO_TYPE_V2) {
+	if (id == GPIO_TYPE_V2 || id == GPIO_TYPE_V2_1) {
 		bank->gpio_regs = &gpio_regs_v2;
 		bank->gpio_type = GPIO_TYPE_V2;
 		bank->db_clk = of_clk_get(bank->of_node, 1);