linux-kernel - Re: [PATCH v4 3/5] spi: spi-qpic: Add qpic spi nand driver support

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Message-ID: <a0c7ab26-4eb7-42e8-a151-671a9222660f@gmail.com>
Date: Sun, 7 Apr 2024 13:58:38 -0500
From: "Alex G." <mr.nuke.me@...il.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 Md Sadre Alam <quic_mdalam@...cinc.com>, andersson@...nel.org,
 konrad.dybcio@...aro.org, broonie@...nel.org, robh@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
 miquel.raynal@...tlin.com, richard@....at, vigneshr@...com,
 manivannan.sadhasivam@...aro.org, neil.armstrong@...aro.org,
 daniel@...rotopia.org, arnd@...db.de, chris.packham@...iedtelesis.co.nz,
 christophe.kerello@...s.st.com, linux-arm-msm@...r.kernel.org,
 linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org
Cc: quic_srichara@...cinc.com, quic_varada@...cinc.com
Subject: Re: [PATCH v4 3/5] spi: spi-qpic: Add qpic spi nand driver support



On 4/7/24 13:54, Krzysztof Kozlowski wrote:
> On 07/04/2024 19:48, Alex G. wrote:
>> On 3/8/24 03:17, Md Sadre Alam wrote:
>>> Add qpic spi nand driver support. The spi nand
>>> driver currently supported the below commands.
>>>
>>> -- RESET
>>> -- READ ID
>>> -- SET FEATURE
>>> -- GET FEATURE
>>> -- READ PAGE
>>> -- WRITE PAGE
>>> -- ERASE PAGE
>>>
>>> Co-developed-by: Sricharan Ramabadhran <quic_srichara@...cinc.com>
>>> Signed-off-by: Sricharan Ramabadhran <quic_srichara@...cinc.com>
>>> Co-developed-by: Varadarajan Narayanan <quic_varada@...cinc.com>
>>> Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
>>> Signed-off-by: Md Sadre Alam <quic_mdalam@...cinc.com>
>>> ---
>>
>> For the entire series:
>>
>> Tested-by: Alexandru Gagniuc <mr.nuke.me@...il.com>
>>
>>> diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
>>> index bc7021da2fe9..63764e943d82 100644
>>> --- a/drivers/spi/Kconfig
>>> +++ b/drivers/spi/Kconfig
>>> @@ -882,6 +882,14 @@ config SPI_QCOM_QSPI
>>>    	help
>>>    	  QSPI(Quad SPI) driver for Qualcomm QSPI controller.
>>>    
>>> +config SPI_QPIC_SNAND
>>> +	tristate "QPIC SNAND controller"
>>> +	depends on ARCH_QCOM || COMPILE_TEST
>>
>> Here, it needs to 'select QPIC_COMMON`. Otherwise it can run into
>> unresolved symbols:
>>
>> : drivers/spi/spi-qpic-snand.o: in function `snandc_set_reg':
>>    drivers/spi/spi-qpic-snand.c:56:(.text+0x484): undefined reference to
>> `qcom_offset_to_nandc_reg'
> 
> No, do not select user-visible symbols. If you observe such issues then
> either stubs are missing or depends on.

I apologize for making a bad suggestion. Thank you for pointing it out.

Alex