linux-kernel - Re: [PATCH v2 2/3] spi: dw-mmio: update dw_spi_mmio_of

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Date: Mon, 1 Jul 2024 08:17:29 -0500
From: Samuel Holland <samuel.holland@...ive.com>
To: Kanak Shilledar <kanakshilledar@...il.com>
Cc: Serge Semin <fancer.lancer@...il.com>, Mark Brown <broonie@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Jisheng Zhang <jszhang@...nel.org>,
 Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>,
 Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt
 <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v2 2/3] spi: dw-mmio: update dw_spi_mmio_of_match struct
 with thead

Hi Kanak,

On 2024-07-01 7:13 AM, Kanak Shilledar wrote:
> updated the struct of_device_id dw_spi_mmio_of_match to include
> the updated compatible value for TH1520 SoC ("thead,th1520-spi")
> to initialize with dw_spi_pssi_init().
> 
> Signed-off-by: Kanak Shilledar <kanakshilledar@...il.com>
> ---
> Changes in v2:
> - Separated from a single patch file.
> ---
>  drivers/spi/spi-dw-mmio.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
> index 819907e332c4..39e3d46ebf5d 100644
> --- a/drivers/spi/spi-dw-mmio.c
> +++ b/drivers/spi/spi-dw-mmio.c
> @@ -419,6 +419,7 @@ static const struct of_device_id dw_spi_mmio_of_match[] = {
>  	{ .compatible = "microchip,sparx5-spi", dw_spi_mscc_sparx5_init},
>  	{ .compatible = "canaan,k210-spi", dw_spi_canaan_k210_init},
>  	{ .compatible = "amd,pensando-elba-spi", .data = dw_spi_elba_init},
> +	{ .compatible = "thead,th1520-spi", .data = dw_spi_pssi_init},

Your binding requires snps,dw-apb-ssi as a fallback compatible string, which is
already supported by this driver and uses the same match data. So you don't need
this patch; its only effect is to make the kernel larger.

Regards,
Samuel

>  	{ /* end of table */}
>  };
>  MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match);