uart0-helloworld-sdboot: add support for Allwinner A733

Enable UART's pinctrl and clock settings.

The clock and pio offset for UART controller is changed in A733.

Signed-off-by: Yixun Lan <dlan@gentoo.org>

Author: dlan17

uart0-helloworld-sdboot.c

@@ -80,6 +80,7 @@ typedef unsigned char u8;
 #define R329_UART0_BASE		0x02500000
 #define R329_PIO_BASE		0x02000400
 #define R329_CCM_BASE		0x02001000
+#define A733_CCM_BASE		0x02002000
 
 #define V853_PIO_BASE		0x02000000
 
@@ -175,6 +176,7 @@ enum sunxi_gpio_number {
 #define FLAG_NEW_CLOCK		BIT(3)
 #define FLAG_UART_ON_APB1	BIT(4)
 #define FLAG_A80_CLOCK		BIT(5)
+#define FLAG_A733_GPIO		BIT(6)
 
 #define FLAG_NCAT2		FLAG_NEW_GPIO | FLAG_NEW_CLOCK
 
@@ -239,6 +241,8 @@ static const struct soc_info {
 		R329_UART0_BASE, SUNXI_GPH(9), MUX_5, FLAG_NCAT2 },
 	{ 0x1890, "A523", V853_PIO_BASE, R329_CCM_BASE, SRAM_A1_ADDR_20000,
 		R329_UART0_BASE, SUNXI_GPB(9), MUX_2, FLAG_NCAT2 },
+	{ 0x1903, "A733", V853_PIO_BASE, A733_CCM_BASE, SRAM_A1_ADDR_20000,
+		R329_UART0_BASE, SUNXI_GPB(9), MUX_2, FLAG_NEW_CLOCK | FLAG_A733_GPIO},
 };
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
@@ -409,7 +413,10 @@ static const struct soc_info *sunxi_detect_soc(void)
 static void clock_init_uart(const struct soc_info *soc)
 {
 	if (soc->flags & FLAG_NEW_CLOCK) {
-		set_wbit(soc->ccu_base + 0x90c,
+		int reg_ofs;
+
+		reg_ofs = (soc->soc_id == 0x1903) ? 0xe00 : 0x90c;
+		set_wbit(soc->ccu_base + reg_ofs,
 			 0x10001 << (CONFIG_CONS_INDEX - 1));
 	} else {
 		int bit = 16 + CONFIG_CONS_INDEX - 1;
@@ -446,13 +453,25 @@ static void gpio_init(const struct soc_info *soc)
 		pio_bank_size = 0x30;
 		pio_dat_off = 0x10;
 		pio_pull_off = 0x24;
+	} else if (soc->flags & FLAG_A733_GPIO) {
+		pio_bank_size = 0x80;
+		pio_dat_off = 0x10;
+		pio_pull_off = 0x30;
 	} else {
 		/* GPIO V1 */
 		pio_bank_size = 0x24;
 		pio_dat_off = 0x10;
 		pio_pull_off = 0x1c;
 	}
 
+	/*
+	 * For Allwinner SoC A733:
+	 * Adjust pio_base offset by shift size 0x80, as
+	 * PB bank start at 0x100 with the bank size 0x80
+	 */
+	if (soc->soc_id == 0x1903)
+		pio_base += 0x80;
+
 	if (soc->flags & FLAG_UART_ON_PORTF) {
 		/* Disable normal UART0 pins to avoid conflict */
 		sunxi_gpio_set_cfgpin(soc->uart0_tx_pin, MUX_GPIO_INPUT);