Define CFG_DDR_SDRAM_CLK_CNTL for the MPC8349E-mITX and MPC8349E-mITX-GP. This allows ddr->sdram_clk_cntl to be properly initialized. This is necessary on some ITX boards, notably those with a revision 3.1 CPU.
Also change spd_sdram() in cpu/mpc83xx/spd_sdram.c to not write anything into ddr->sdram_clk_cntl if CFG_DDR_SDRAM_CLK_CNTL is not defined.
Signed-off-by: Timur Tabi timur@freescale.com ---
This patch fixes bug 517 and fixes problems with some MPC8349E-mITX boards. It's been tested on all 83xx platforms that use SPD.
board/mpc8349itx/mpc8349itx.c | 3 +-- cpu/mpc83xx/spd_sdram.c | 5 ----- include/configs/MPC8349ITX.h | 3 +++ 3 files changed, 4 insertions(+), 7 deletions(-)
diff --git a/board/mpc8349itx/mpc8349itx.c b/board/mpc8349itx/mpc8349itx.c index 2b3ded1..178b1d3 100644 --- a/board/mpc8349itx/mpc8349itx.c +++ b/board/mpc8349itx/mpc8349itx.c @@ -80,8 +80,7 @@ int fixed_sdram(void) im->ddr.sdram_interval = (0x0410 << SDRAM_INTERVAL_REFINT_SHIFT) | (0x0100 << SDRAM_INTERVAL_BSTOPRE_SHIFT); - im->ddr.sdram_clk_cntl = - DDR_SDRAM_CLK_CNTL_SS_EN | DDR_SDRAM_CLK_CNTL_CLK_ADJUST_05; + im->ddr.sdram_clk_cntl = CFG_DDR_SDRAM_CLK_CNTL;
udelay(200);
diff --git a/cpu/mpc83xx/spd_sdram.c b/cpu/mpc83xx/spd_sdram.c index d9b8753..2f5f9a3 100644 --- a/cpu/mpc83xx/spd_sdram.c +++ b/cpu/mpc83xx/spd_sdram.c @@ -693,11 +693,6 @@ long int spd_sdram()
#ifdef CFG_DDR_SDRAM_CLK_CNTL /* Optional platform specific value */ ddr->sdram_clk_cntl = CFG_DDR_SDRAM_CLK_CNTL; -#else - /* SS_EN = 0, source synchronous disable - * CLK_ADJST = 0, MCK/MCK# is launched aligned with addr/cmd - */ - ddr->sdram_clk_cntl = 0x00000000; #endif debug("DDR:sdram_clk_cntl=0x%08x\n", ddr->sdram_clk_cntl);
diff --git a/include/configs/MPC8349ITX.h b/include/configs/MPC8349ITX.h index 37bbfb3..906339e 100644 --- a/include/configs/MPC8349ITX.h +++ b/include/configs/MPC8349ITX.h @@ -154,6 +154,9 @@ #define CFG_MEMTEST_START 0x1000 /* memtest region */ #define CFG_MEMTEST_END 0x2000
+#define CFG_DDR_SDRAM_CLK_CNTL (DDR_SDRAM_CLK_CNTL_SS_EN | \ + DDR_SDRAM_CLK_CNTL_CLK_ADJUST_05) + #ifdef CONFIG_HARD_I2C #define CONFIG_SPD_EEPROM /* use SPD EEPROM for DDR setup*/ #endif