From af46d9f54b192076c1e3096299d594e2783fc175 Mon Sep 17 00:00:00 2001 From: Jason Liu Date: Wed, 19 May 2010 22:15:05 +0800 Subject: ENGR00123630 Set ddr clk clock according to the board ID Set DDR clock to 400Mhz on MX53-EVK with DDR2 1GByte RevB Set DDR clock to 300Mhz on MX53-EVK with DDR2 2GByte RevA1 Remove the clock dump during boot, user can use clk command to get the clock information. Using help clk to get the command help Signed-off-by:Jason Liu --- board/freescale/mx53_evk/mx53_evk.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) (limited to 'board/freescale/mx53_evk/mx53_evk.c') diff --git a/board/freescale/mx53_evk/mx53_evk.c b/board/freescale/mx53_evk/mx53_evk.c index 6be0b37..98d5938 100644 --- a/board/freescale/mx53_evk/mx53_evk.c +++ b/board/freescale/mx53_evk/mx53_evk.c @@ -44,6 +44,10 @@ #include #endif +#ifdef CONFIG_CMD_CLOCK +#include +#endif + DECLARE_GLOBAL_DATA_PTR; static u32 system_rev; @@ -415,6 +419,25 @@ static int __print_board_info(int id0, int id1) return ret; } +static int _identify_board_fix_up(int id0, int id1) +{ + int ret = 0; + +#ifdef CONFIG_CMD_CLOCK + /* For EVK RevB, set DDR to 400MHz */ + if (id0 == 21 && id1 == 15) { + ret = clk_config(CONFIG_REF_CLK_FREQ, 400, PERIPH_CLK); + if (ret < 0) + return ret; + + ret = clk_config(CONFIG_REF_CLK_FREQ, 400, DDR_CLK); + if (ret < 0) + return ret; + } +#endif + return ret; +} + int identify_board_id(void) { int ret = 0; @@ -440,6 +463,10 @@ int identify_board_id(void) return ret; ret = __print_board_info(bd_id0, bd_id1); + if (ret < 0) + return ret; + + ret = _identify_board_fix_up(bd_id0, bd_id1); return ret; @@ -682,7 +709,7 @@ int board_late_init(void) int checkboard(void) { - printf("Board: "); + printf("Board: "); #ifdef CONFIG_I2C_MXC identify_board_id(); -- cgit v1.1