[U-Boot] [PATCH] board/t1040qds: Relax IFC FPGA timings

Current IFC-FPGA TCH(Chip Select hold time with respect to WE deassertion) is 0 i.e. 0 ns hold time on writes. This may not work on higher clock freqencies.
So, Increase TCH as 0x8 i.e. 8 ip_clk.
Signed-off-by: Prabhakar Kushwaha prabhakar@freescale.com --- include/configs/T1040QDS.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/configs/T1040QDS.h b/include/configs/T1040QDS.h index 74f4bde..521a0dc 100644 --- a/include/configs/T1040QDS.h +++ b/include/configs/T1040QDS.h @@ -247,7 +247,7 @@ unsigned long get_board_ddr_clk(void); #define CONFIG_SYS_CS3_FTIM1 (FTIM1_GPCM_TACO(0xff) | \ FTIM1_GPCM_TRAD(0x3f)) #define CONFIG_SYS_CS3_FTIM2 (FTIM2_GPCM_TCS(0x0e) | \ - FTIM2_GPCM_TCH(0x0) | \ + FTIM2_GPCM_TCH(0x8) | \ FTIM2_GPCM_TWP(0x1f)) #define CONFIG_SYS_CS3_FTIM3 0x0

On 12/11/2013 10:39 PM, Prabhakar Kushwaha wrote:
Current IFC-FPGA TCH(Chip Select hold time with respect to WE deassertion) is 0 i.e. 0 ns hold time on writes. This may not work on higher clock freqencies.
So, Increase TCH as 0x8 i.e. 8 ip_clk.
Signed-off-by: Prabhakar Kushwaha prabhakar@freescale.com
Applied to u-boot-mpc85xx/master. Thanks.
York
participants (2)
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Prabhakar Kushwaha
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York Sun