From a9d4390c6d27e737887388ccbb48f3767f9f89ef Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
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 <blogic@openwrt.org>
---
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
}