[PATCH v2 1/2] mmc/host/rtsx: Configure SD_CFG2 register in sd_rw_multi

2012-11-19 Thread wei_wang
From: Wei WANG wei_w...@realsil.com.cn For Realtek card reader, internal regsiter SD_CFG2 should be configured before transferring data. In the prior version, the value of this register has been calculated, but forgotten to write back to the internal register. Signed-off-by: Wei WANG

Re: [PATCH v2 1/2] mmc/host/rtsx: Configure SD_CFG2 register in sd_rw_multi

2012-11-19 Thread Chris Ball
Hi, Sorry to be pedantic, but: On Mon, Nov 19 2012, wei_w...@realsil.com.cn wrote: For Realtek card reader, internal regsiter SD_CFG2 should be configured before transferring data. In the prior version, the value of this register has been calculated, but forgotten to write back to the

Re: [PATCH v2 1/2] mmc/host/rtsx: Configure SD_CFG2 register in sd_rw_multi

2012-11-19 Thread wwang
于 2012年11月20日 10:21, Chris Ball 写道: Hi, Sorry to be pedantic, but: On Mon, Nov 19 2012, wei_w...@realsil.com.cn wrote: For Realtek card reader, internal regsiter SD_CFG2 should be configured before transferring data. In the prior version, the value of this register has been calculated, but

Re: [PATCH v2 1/2] mmc/host/rtsx: Configure SD_CFG2 register in sd_rw_multi

2012-11-19 Thread Chris Ball
Hi, On Mon, Nov 19 2012, wwang wrote: It's about compatibility issue. The default value of SD_CFG2 is proper for writing data. But for reading sequence, the timing is not good enough. So in some extreme circumstance, card reader may sample the response data from the card as good even if the