linux-kernel - Re: [PATCH v4 2/3] spi: dw: Add support for Intel Thunder Bay SPI controller

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Date:   Wed, 13 Apr 2022 16:05:02 +0300
From:   Serge Semin <fancer.lancer@...il.com>
To:     nandhini.srikandan@...el.com
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        broonie@...nel.org, robh+dt@...nel.org, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        mgross@...ux.intel.com, kris.pan@...el.com,
        kenchappa.demakkanavar@...el.com, furong.zhou@...el.com,
        mallikarjunappa.sangannavar@...el.com, mahesh.r.vaidya@...el.com,
        rashmi.a@...el.com
Subject: Re: [PATCH v4 2/3] spi: dw: Add support for Intel Thunder Bay SPI
 controller

On Tue, Mar 08, 2022 at 06:33:30PM +0800, nandhini.srikandan@...el.com wrote:
> From: Nandhini Srikandan <nandhini.srikandan@...el.com>
> 
> Add support for Intel Thunder Bay SPI controller, which uses DesignWare
> DWC_ssi core and also add common init function for both Keem Bay and
> Thunder Bay.

Please see my comments to the patch
[PATCH v4 3/3] spi: dw: Add support for master mode selection for DWC SSI controller
of this series. I think this patch should go after that one so to
introduce a safer conversion of the DWC AHB SSI functionality.

-Sergey

> 
> Signed-off-by: Nandhini Srikandan <nandhini.srikandan@...el.com>
> ---
>  drivers/spi/spi-dw-mmio.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
> index 5101c4c6017b..26c40ea6dd12 100644
> --- a/drivers/spi/spi-dw-mmio.c
> +++ b/drivers/spi/spi-dw-mmio.c
> @@ -214,11 +214,10 @@ static int dw_spi_hssi_init(struct platform_device *pdev,
>  	return 0;
>  }
>  
> -static int dw_spi_keembay_init(struct platform_device *pdev,
> -			       struct dw_spi_mmio *dwsmmio)
> +static int dw_spi_intel_init(struct platform_device *pdev,
> +			     struct dw_spi_mmio *dwsmmio)
>  {
>  	dwsmmio->dws.ip = DW_HSSI_ID;
> -	dwsmmio->dws.caps = DW_SPI_CAP_KEEMBAY_MST;
>  
>  	return 0;
>  }
> @@ -349,7 +348,8 @@ static const struct of_device_id dw_spi_mmio_of_match[] = {
>  	{ .compatible = "amazon,alpine-dw-apb-ssi", .data = dw_spi_alpine_init},
>  	{ .compatible = "renesas,rzn1-spi", .data = dw_spi_pssi_init},
>  	{ .compatible = "snps,dwc-ssi-1.01a", .data = dw_spi_hssi_init},
> -	{ .compatible = "intel,keembay-ssi", .data = dw_spi_keembay_init},
> +	{ .compatible = "intel,keembay-ssi", .data = dw_spi_intel_init},
> +	{ .compatible = "intel,thunderbay-ssi", .data = dw_spi_intel_init},
>  	{ .compatible = "microchip,sparx5-spi", dw_spi_mscc_sparx5_init},
>  	{ .compatible = "canaan,k210-spi", dw_spi_canaan_k210_init},
>  	{ /* end of table */}
> -- 
> 2.17.1
>