linux-kernel - Re: [RFC PATCH v1] mmc: sdhci-of-arasan: Add the support for sdhci-5.1

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Date:	Tue, 11 Aug 2015 16:53:35 +0200
From:	Michal Simek <michal.simek@...inx.com>
To:	Shawn Lin <shawn.lin@...k-chips.com>,
	Michal Simek <michal.simek@...inx.com>,
	<soren.brinkmann@...inx.com>
CC:	Ulf Hansson <ulf.hansson@...aro.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: Re: [RFC PATCH v1] mmc: sdhci-of-arasan: Add the support for
 sdhci-5.1

On 08/11/2015 09:46 AM, Shawn Lin wrote:
> This patch adds the compatible string in sdhci-of-arasan.c to
> support sdhci-arasan5.1 version of controller. No documented
> controller IP version is found in the TRM, so we use ths version
> of command queueing engine integrated into this controller by arasan
> to specify our controller.
> 
> Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>
> 
> ---
> 
> Changes in v1:
> - Remove redundant SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN for "arasan, sdhci-5.1" since
>   SDHCI will check "host->max_clk == 0" and let driver get it from host->ops->get_max_clock.
> 
>  Documentation/devicetree/bindings/mmc/arasan,sdhci.txt | 2 +-
>  drivers/mmc/host/sdhci-of-arasan.c                     | 1 +
>  2 files changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> index 7e94903..da541c3 100644
> --- a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> +++ b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> @@ -9,7 +9,7 @@ Device Tree Bindings for the Arasan SDHCI Controller
>  
>  Required Properties:
>    - compatible: Compatibility string. Must be 'arasan,sdhci-8.9a' or
> -                'arasan,sdhci-4.9a'
> +                'arasan,sdhci-4.9a' or 'arasan,sdhci-5.1'
>    - reg: From mmc bindings: Register location and length.
>    - clocks: From clock bindings: Handles to clock inputs.
>    - clock-names: From clock bindings: Tuple including "clk_xin" and "clk_ahb"
> diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
> index ef5a7d2..75379cb 100644
> --- a/drivers/mmc/host/sdhci-of-arasan.c
> +++ b/drivers/mmc/host/sdhci-of-arasan.c
> @@ -217,6 +217,7 @@ static int sdhci_arasan_remove(struct platform_device *pdev)
>  
>  static const struct of_device_id sdhci_arasan_of_match[] = {
>  	{ .compatible = "arasan,sdhci-8.9a" },
> +	{ .compatible = "arasan,sdhci-5.1" },
>  	{ .compatible = "arasan,sdhci-4.9a" },
>  	{ }
>  };
> 

Acked-by: Michal Simek <michal.simek@...inx.com>

Thanks,
Michal


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