linux-kernel - Re: [PATCH v4 1/3] mtd: rawnand: qcom: Pass 18 bit offset from NANDc base to BAM base

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Message-ID: <3850e8df-9744-420d-a5e0-46cb85b76fcd@gmail.com>
Date: Fri, 25 Apr 2025 09:36:16 +0200
From: Gabor Juhos <j4g8y7@...il.com>
To: Md Sadre Alam <quic_mdalam@...cinc.com>, miquel.raynal@...tlin.com,
 richard@....at, vigneshr@...com, manivannan.sadhasivam@...aro.org,
 broonie@...nel.org, absahu@...eaurora.org, bbrezillon@...nel.org,
 architt@...eaurora.org, quic_srichara@...cinc.com,
 linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-arm-msm@...r.kernel.org, linux-spi@...r.kernel.org
Subject: Re: [PATCH v4 1/3] mtd: rawnand: qcom: Pass 18 bit offset from NANDc
 base to BAM base

2025. 04. 10. 12:00 keltezéssel, Md Sadre Alam írta:
> The BAM command descriptor provides only 18 bits to specify the NAND
> register offset. Additionally, in the BAM command descriptor, the NAND
> register offset is supposed to be specified as "(NANDc base - BAM base)
> + reg_off". Since, the BAM controller expecting the value in the form of
> "NANDc base - BAM base", so that added a new field 'bam_offset' in the NAND
> properties structure and use it while preparing the command descriptor.
> 
> Previously, the driver was specifying the NANDc base address in the BAM
> command descriptor.
> 
> Cc: stable@...r.kernel.org
> Fixes: 8d6b6d7e135e ("mtd: nand: qcom: support for command descriptor formation")
> Tested-by: Lakshmi Sowjanya D <quic_laksd@...cinc.com>
> Signed-off-by: Md Sadre Alam <quic_mdalam@...cinc.com>

Tested-by: Gabor Juhos <j4g8y7@...il.com> # on IPQ9574