Messages in this thread | | | Subject | Re: [PATCH] mtd: nand: raw: qcom_nandc: Don't clear_bam_transaction on READID | From | Sricharan Ramabadhran <> | Date | Fri, 28 Jan 2022 09:55:01 +0530 |
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Hi Miquel,
On 1/26/2022 4:12 PM, Miquel Raynal wrote: > Hi Mani, > > mani@kernel.org wrote on Wed, 26 Jan 2022 16:03:16 +0530: > >> On Wed, Jan 26, 2022 at 11:16:13AM +0100, Miquel Raynal wrote: >>> Hello, >>> >>> miquel.raynal@bootlin.com wrote on Fri, 14 Jan 2022 08:27:18 +0100: >>> >>>> Hi Konrad, >>>> >>>> konrad.dybcio@somainline.org wrote on Thu, 13 Jan 2022 19:44:26 +0100: >>>> >>>>> While I have absolutely 0 idea why and how, running clear_bam_transaction >>>>> when READID is issued makes the DMA totally clog up and refuse to function >>>>> at all on mdm9607. In fact, it is so bad that all the data gets garbled >>>>> and after a short while in the nand probe flow, the CPU decides that >>>>> sepuku is the only option. >>>>> >>>>> Removing _READID from the if condition makes it work like a charm, I can >>>>> read data and mount partitions without a problem. >>>>> >>>>> Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org> >>>>> --- >>>>> This is totally just an observation which took me an inhumane amount of >>>>> debug prints to find.. perhaps there's a better reason behind this, but >>>>> I can't seem to find any answers.. Therefore, this is a BIG RFC! >>>> I'm adding two people from codeaurora who worked a lot on this driver. >>>> Hopefully they will have an idea :) >>> Sadre, I've spent a significant amount of time reviewing your patches, >>> now it's your turn to not take a month to answer to your peers >>> proposals. >>> >>> Please help reviewing this patch. >>> >> Sorry. I was hoping that Qcom folks would chime in as I don't have any idea >> about the mdm9607 platform. It could be that the mail server migration from >> codeaurora to quicinc put a barrier here. >> >> Let me ping them internally. > Oh, ok, I didn't know. Thanks!
Sorry Miquel, somehow we did not get this email in our inbox. Thanks to Mani for pinging us, we will test this up today and get back.
Regards, Sricharan
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