SDRC MCFG Register configuration corrected for SDP3430. Signed-off-by: Shankarganesh K shankarganesh@ti.com --- board/omap/board-sdp343x.c | 45 +++++++++++++-------------------------------- 1 file changed, 13 insertions(+), 32 deletions(-)
Index: U-BOOT_V2/board/omap/board-sdp343x.c =================================================================== --- U-BOOT_V2.orig/board/omap/board-sdp343x.c 2008-09-27 17:08:39.000000000 -0500 +++ U-BOOT_V2/board/omap/board-sdp343x.c 2008-09-28 17:19:57.000000000 -0500 @@ -85,13 +85,12 @@ */ static void sdrc_init(void) { - /* issues software reset of SDRAM interface */ - /* No idle ack and RESET enable */ - __raw_writel(0x0A, SDRC_REG(SYSCONFIG)); - sdelay(100); - /* No idle ack and RESET disable */ - __raw_writel(0x08, SDRC_REG(SYSCONFIG)); - + /* Issue SDRC Soft reset */ + __raw_writel(0x12, SDRC_REG(SYSCONFIG)); + /* Wait until Reset complete */ + while ((__raw_readl(SDRC_REG(STATUS)) & 0x1) == 0); + /* SDRC to normal mode */ + __raw_writel(0x10, SDRC_REG(SYSCONFIG)); /* SDRC Sharing register */ /* 32-bit SDRAM on data lane [31:0] - CS0 */ /* pin tri-stated = 1 */ @@ -99,7 +98,7 @@
/* ----- SDRC_REG(CS0 Configuration --------- */ /* SDRC_REG(MCFG0 register */ - __raw_writel(0x02D04011, SDRC_REG(MCFG_0)); + __raw_writel(0x02584019, SDRC_REG(MCFG_0));
/* SDRC_REG(RFR_CTRL0 register */ __raw_writel(0x0003DE01, SDRC_REG(RFR_CTRL_0)); @@ -124,35 +123,17 @@ __raw_writel(0x00000002, SDRC_REG(MANUAL_0));
/* SDRC MR0 register */ - __raw_writel(0x00000032, SDRC_REG(MR_0)); /* Burst length =4 */ - /* CAS latency = 3 */ /* Write Burst = Read Burst */ /* Serial Mode */ + __raw_writel(0x00000032, SDRC_REG(MR_0)); /* Burst length =4 */
- /* SDRC DLLA control register */ - /* Enable DLL, Load counter with 115 (middle of range) */ - /* Delay is 90 degrees */ - __raw_writel(0x0000730E, SDRC_REG(DLLA_CTRL)); - - /* - * Clear the enable DLL bit to use DLLA in unlock mode - * (counter value is continuously asserted) - */ - __raw_writel(0x0000730A, SDRC_REG(DLLA_CTRL)); - - /* SDRC DLLB control register - * Enable DLL, Load counter with 128 (middle of range) - * Delay is 90 degrees - */ - __raw_writel(0x0000730E, SDRC_REG(DLLB_CTRL)); - - /* - * Clear the enable DLL bit to use DLLB in unlock mode - * (counter value is continuously asserted) - */ - __raw_writel(0x0000730A, SDRC_REG(DLLB_CTRL)); + /* SDRC DLLA control register */ + /* Enable DLL A */ + __raw_writel(0x0000000A, SDRC_REG(DLLA_CTRL));
+ /* wait until DLL is locked */ + while ((__raw_readl(SDRC_REG(DLLA_STATUS)) & 0x4) == 0); return; }