From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dirk Behme Date: Fri, 22 Jan 2016 11:30:32 +0000 Subject: Re: [RFC 0/6] mmc: sdhi: add basic r8a7795 support Message-Id: <56A212D8.3060105@de.bosch.com> List-Id: References: <1453220461-2598-1-git-send-email-wsa@the-dreams.de> In-Reply-To: <1453220461-2598-1-git-send-email-wsa@the-dreams.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org On 22.01.2016 11:32, Yoshihiro Shimoda wrote: > Hi Dirk-san, Wolfram-san, > >>> And third, from reading the r8a7795 manual I think the manual talks about >>> >>> https://github.com/dirkbehme/linux-renesas-rcar-gen3/commit/f2a727c859916d59dca85dbb72c1b61da3fd6da0 >>> >>> But testing this it doesn't work. So either the manual is wrong, or I missed >>> anything else. >> >> I have seen this patch and my gut feeling is that it won't make a >> difference? SCLKDIVEN is like CBUSY plus some more cycles AFAIU. But I >> am not working on DMA issues now, this has to wait. > > I'm not sure we have to use CBSY bit instead of SCLKDIVEN on r8a7795. The r8a7795 manual I have has several "Do / Do not xxx when the CBSY bit in SD_INFO2 is set to x" It always talks about CBSY, not SCLKDIVEN. Best regards Dirk