From: York Sun <yorksun@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 12/31] powerpc/mpc8xxx: Allow DDR overclock
Date: Fri, 22 Mar 2013 10:29:10 -0700 [thread overview]
Message-ID: <1363973369-26110-12-git-send-email-yorksun@freescale.com> (raw)
In-Reply-To: <1363973369-26110-1-git-send-email-yorksun@freescale.com>
Allow DDR clock runs faster than SPD specifes. This may cause memory
failure, but the user should know what is going to happen when using
higher than expected DDR clock.
Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
---
.../cpu/mpc8xxx/ddr/lc_common_dimm_params.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c
index 9adde31..e958e13 100644
--- a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c
+++ b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c
@@ -44,7 +44,6 @@ compute_cas_latency_ddr3(const dimm_params_t *dimm_params,
printf("DDR clock (MCLK cycle %u ps) is faster than "
"the slowest DIMM(s) (tCKmin %u ps) can support.\n",
mclk_ps, tCKmin_X_ps);
- return 1;
}
/* determine the acutal cas latency */
caslat_actual = (tAAmin_ps + mclk_ps - 1) / mclk_ps;
@@ -60,7 +59,6 @@ compute_cas_latency_ddr3(const dimm_params_t *dimm_params,
if (caslat_actual * mclk_ps > 20000) {
printf("The choosen cas latency %d is too large\n",
caslat_actual);
- return 1;
}
outpdimm->lowest_common_SPD_caslat = caslat_actual;
--
1.7.9.5
next prev parent reply other threads:[~2013-03-22 17:29 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-22 17:28 [U-Boot] [PATCH 01/31] 83xx/pcie: fix build error for 83xx pcie York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 02/31] Enable L2 cache parity/ECC error checking York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 03/31] net/phy: fix select line for TN80xx York Sun
2013-03-22 20:59 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 04/31] powerpc/mpc85xx: check if core is disabled for showing status York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 05/31] powerpc/t4240qds: Add VDD override York Sun
2013-03-22 21:00 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 06/31] T4240/ramboot: enable PBL tool for T4240 York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 07/31] Add e6500 L2 replacement policy selection York Sun
2013-03-22 21:00 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 08/31] powerpc/p5040: enable NAND, SD, SPI boot support York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 09/31] powerpc/T4160: Merge T4160 and T4240 in config_mpc85xx.h York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 10/31] powerpc/mpc8xxx: Add T1040 and variant SoCs York Sun
2013-03-22 21:00 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 11/31] powerpc/chassis2: Change core numbering scheme York Sun
2013-03-22 17:29 ` York Sun [this message]
2013-03-22 17:29 ` [U-Boot] [PATCH 13/31] powerpc/qixis: add clock measurement registers York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 14/31] powerpc/t4qds: use clock measurement for sysclk and ddr clock York Sun
2013-03-22 21:01 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 15/31] powerpc/p5040: enable PBL tool support York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 16/31] board/t4240qds, b4860qds: LAW/TLB for DCSR set to size 32M York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 17/31] Enable XAUI interface for B4860QDS York Sun
2013-03-22 21:02 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 18/31] powerpc/t4qds: Add SW7[4] in the DIP switch display York Sun
2013-03-22 21:02 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 19/31] powerpc/t4qds: Enable master module for Boot from SRIO and PCIE York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 20/31] powerpc/t4qds: Slave module for boot " York Sun
2013-03-22 21:02 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 21/31] powerpc/t4240qds: fix PHY reset timeout issue York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 22/31] powerpc/doc: Fix the misalignment of document README.srio-pcie-boot-corenet York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 23/31] powerpc/b4860: fix for Serdes connectivity to SFP's York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 24/31] powerpc/mpc85xx: add setting of clock-frequency for mpic node York Sun
2013-03-22 21:03 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 25/31] powerpc/p2041: fix serdes reference clock frequency display for PC board York Sun
2013-03-22 21:03 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 26/31] sf: spansion: Add support for S25FL128S York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 27/31] powerpc/B4: Merge B4420 and B4860 in config_mpc85xx.h York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 28/31] powerpc/p5040: fix mdio mux for 10G port York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 29/31] powerpc/usb: Fix usb device-tree fix-up York Sun
2013-03-22 21:04 ` Wolfgang Denk
2013-03-22 17:29 ` [U-Boot] [PATCH 30/31] fman/mEMAC: set SETSP bit in IF_MODE regisgter for RGMII speed York Sun
2013-03-22 17:29 ` [U-Boot] [PATCH 31/31] powerpc/b4860qds: Add LAW Target ID and Create LAW entry for Maple York Sun
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