From d21686263574e95cb3e9e9b0496f968b1b897fdb Mon Sep 17 00:00:00 2001 From: Stefan Roese <sr@denx.de> Date: Thu, 19 Apr 2007 09:53:52 +0200 Subject: [PATCH] ppc4xx: Fix chip select timing for SysACE access on AMCC Katmai Previous versions used full wait states for the chip select #1 which is connected to the Xilinix SystemACE controller on the AMCC Katmai evaluation board. This leads to really slow access and therefore low performance. This patch now sets up the chip select a lot faster resulting in much better read/write performance of the Linux driver. Signed-off-by: Stefan Roese <sr@denx.de> --- include/configs/katmai.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/include/configs/katmai.h b/include/configs/katmai.h index 7f55366ca5..cc47a168ed 100644 --- a/include/configs/katmai.h +++ b/include/configs/katmai.h @@ -360,7 +360,19 @@ EBC_BXCR_BW_16BIT) /* Memory Bank 1 (Xilinx System ACE controller) initialization */ -#define CFG_EBC_PB1AP 0x7F8FFE80 +#define CFG_EBC_PB1AP (EBC_BXAP_BME_DISABLED | \ + EBC_BXAP_TWT_ENCODE(4) | \ + EBC_BXAP_BCE_DISABLE | \ + EBC_BXAP_BCT_2TRANS | \ + EBC_BXAP_CSN_ENCODE(0) | \ + EBC_BXAP_OEN_ENCODE(0) | \ + EBC_BXAP_WBN_ENCODE(0) | \ + EBC_BXAP_WBF_ENCODE(0) | \ + EBC_BXAP_TH_ENCODE(0) | \ + EBC_BXAP_RE_DISABLED | \ + EBC_BXAP_SOR_NONDELAYED | \ + EBC_BXAP_BEM_WRITEONLY | \ + EBC_BXAP_PEN_DISABLED) #define CFG_EBC_PB1CR (EBC_BXCR_BAS_ENCODE(CFG_ACE_BASE) | \ EBC_BXCR_BS_1MB | \ EBC_BXCR_BU_RW | \ -- 2.39.5