From a9d4390c6d27e737887388ccbb48f3767f9f89ef Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 24 Jan 2014 17:01:17 +0100 Subject: [PATCH 209/215] MIPS: ralink: add MT7621 early_printk support Signed-off-by: John Crispin --- arch/mips/ralink/early_printk.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) --- a/arch/mips/ralink/early_printk.c +++ b/arch/mips/ralink/early_printk.c @@ -13,6 +13,8 @@ #ifdef CONFIG_SOC_RT288X #define EARLY_UART_BASE 0x300c00 +#elif defined(CONFIG_SOC_MT7621) +#define EARLY_UART_BASE 0x1E000c00 #else #define EARLY_UART_BASE 0x10000c00 #endif @@ -40,9 +42,15 @@ static inline u32 uart_r32(unsigned reg) void prom_putchar(unsigned char ch) { +#ifdef CONFIG_SOC_MT7621 + uart_w32(ch, UART_TX); + while ((uart_r32(0x14) & UART_LSR_THRE) == 0) + ; +#else while ((uart_r32(UART_REG_LSR) & UART_LSR_THRE) == 0) ; uart_w32(ch, UART_REG_TX); while ((uart_r32(UART_REG_LSR) & UART_LSR_THRE) == 0) ; +#endif }