diff options
Diffstat (limited to 'target/linux/ar71xx/patches-3.7/521-MIPS-ath79-enable-UART-for-early_serial.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.7/521-MIPS-ath79-enable-UART-for-early_serial.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.7/521-MIPS-ath79-enable-UART-for-early_serial.patch b/target/linux/ar71xx/patches-3.7/521-MIPS-ath79-enable-UART-for-early_serial.patch new file mode 100644 index 0000000..489bc96 --- /dev/null +++ b/target/linux/ar71xx/patches-3.7/521-MIPS-ath79-enable-UART-for-early_serial.patch @@ -0,0 +1,61 @@ +--- a/arch/mips/ath79/early_printk.c ++++ b/arch/mips/ath79/early_printk.c +@@ -56,6 +56,46 @@ static void prom_putchar_dummy(unsigned + /* nothing to do */ + } + ++static void prom_enable_uart(u32 id) ++{ ++ void __iomem *gpio_base; ++ u32 uart_en; ++ u32 t; ++ ++ switch (id) { ++ case REV_ID_MAJOR_AR71XX: ++ uart_en = AR71XX_GPIO_FUNC_UART_EN; ++ break; ++ ++ case REV_ID_MAJOR_AR7240: ++ case REV_ID_MAJOR_AR7241: ++ case REV_ID_MAJOR_AR7242: ++ uart_en = AR724X_GPIO_FUNC_UART_EN; ++ break; ++ ++ case REV_ID_MAJOR_AR913X: ++ uart_en = AR913X_GPIO_FUNC_UART_EN; ++ break; ++ ++ case REV_ID_MAJOR_AR9330: ++ case REV_ID_MAJOR_AR9331: ++ uart_en = AR933X_GPIO_FUNC_UART_EN; ++ break; ++ ++ case REV_ID_MAJOR_AR9341: ++ case REV_ID_MAJOR_AR9342: ++ case REV_ID_MAJOR_AR9344: ++ /* TODO */ ++ default: ++ return; ++ } ++ ++ gpio_base = (void __iomem *)(KSEG1ADDR(AR71XX_GPIO_BASE)); ++ t = __raw_readl(gpio_base + AR71XX_GPIO_REG_FUNC); ++ t |= uart_en; ++ __raw_writel(t, gpio_base + AR71XX_GPIO_REG_FUNC); ++} ++ + static void prom_putchar_init(void) + { + void __iomem *base; +@@ -85,8 +125,10 @@ static void prom_putchar_init(void) + + default: + _prom_putchar = prom_putchar_dummy; +- break; ++ return; + } ++ ++ prom_enable_uart(id); + } + + void prom_putchar(unsigned char ch) |