linux-kernel - Re: [PATCH v2 7/9] spi: fsl-qspi: support the SpacemiT K1 SoC

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Message-ID: <f1a77da8-edf9-4e14-a7f9-01680f60fce6@riscstar.com>
Date: Thu, 23 Oct 2025 19:04:18 -0500
From: Alex Elder <elder@...cstar.com>
To: "han.xu" <han.xu@....com>
Cc: broonie@...nel.org, dlan@...too.org, Frank.li@....com,
 guodong@...cstar.com, linux-spi@...r.kernel.org, imx@...ts.linux.dev,
 spacemit@...ts.linux.dev, linux-riscv@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 7/9] spi: fsl-qspi: support the SpacemiT K1 SoC

On 10/23/25 2:56 PM, han.xu wrote:
> On 25/10/23 12:59PM, Alex Elder wrote:
>> Allow the SPI_FSL_QUADSPI Kconfig option to be selected if ARCH_SPACEMIT
>> enabled.
>>
>> Add support for the SpacemiT K1 SoC in the Freescale QSPI driver by
>> defining the device type data for its QSPI implementation.
>>
>> Signed-off-by: Alex Elder <elder@...cstar.com>
>> ---
>> v2: - A continued line the Kconfig file is now aligned
>>
>>   drivers/spi/Kconfig        |  3 ++-
>>   drivers/spi/spi-fsl-qspi.c | 10 ++++++++++
>>   2 files changed, 12 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
>> index 4d8f00c850c14..592d46c9998bb 100644
>> --- a/drivers/spi/Kconfig
>> +++ b/drivers/spi/Kconfig
>> @@ -435,7 +435,8 @@ config SPI_FSL_LPSPI
>>   
>>   config SPI_FSL_QUADSPI
>>   	tristate "Freescale QSPI controller"
>> -	depends on ARCH_MXC || SOC_LS1021A || ARCH_LAYERSCAPE || COMPILE_TEST
>> +	depends on ARCH_MXC || SOC_LS1021A || ARCH_LAYERSCAPE || \
>> +		   ARCH_SPACEMIT || COMPILE_TEST
>>   	depends on HAS_IOMEM
>>   	help
>>   	  This enables support for the Quad SPI controller in master mode.
>> diff --git a/drivers/spi/spi-fsl-qspi.c b/drivers/spi/spi-fsl-qspi.c
>> index a474d1b341b6a..d4b007e8172b2 100644
>> --- a/drivers/spi/spi-fsl-qspi.c
>> +++ b/drivers/spi/spi-fsl-qspi.c
>> @@ -268,6 +268,15 @@ static const struct fsl_qspi_devtype_data ls2080a_data = {
>>   	.little_endian = true,
>>   };
>>   
>> +static const struct fsl_qspi_devtype_data spacemit_k1_data = {
>> +	.rxfifo = SZ_128,
>> +	.txfifo = SZ_256,
>> +	.ahb_buf_size = SZ_512,
> 
> Do you need to set the new sfa_size here for multiples of 1KB requirement?

Wow, yes.  I'm very sorry, I shouldn't have sent this series
out so soon.  I'm not at home and am not using my normal
development machine.  But importantly I admit to not testing
this on the target hardware before sending.

I won't do that again.

					-Alex

> 
>> +	.invalid_mstrid = QUADSPI_BUFXCR_INVALID_MSTRID,
>> +	.quirks = QUADSPI_QUIRK_TKT253890 | QUADSPI_QUIRK_SKIP_CLK_DISABLE,
>> +	.little_endian = true,
>> +};
>> +
>>   struct fsl_qspi {
>>   	void __iomem *iobase;
>>   	void __iomem *ahb_addr;
>> @@ -1003,6 +1012,7 @@ static const struct of_device_id fsl_qspi_dt_ids[] = {
>>   	{ .compatible = "fsl,imx6ul-qspi", .data = &imx6ul_data, },
>>   	{ .compatible = "fsl,ls1021a-qspi", .data = &ls1021a_data, },
>>   	{ .compatible = "fsl,ls2080a-qspi", .data = &ls2080a_data, },
>> +	{ .compatible = "spacemit,k1-qspi", .data = &spacemit_k1_data, },
>>   	{ /* sentinel */ }
>>   };
>>   MODULE_DEVICE_TABLE(of, fsl_qspi_dt_ids);
>> -- 
>> 2.43.0
>>