From: Rob Herring <robh@kernel.org>
To: Manish Narani <manish.narani@xilinx.com>
Cc: michal.simek@xilinx.com, adrian.hunter@intel.com,
ulf.hansson@linaro.org, linux-arm-kernel@lists.infradead.org,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, mark.rutland@arm.com,
anirudh@xilinx.com, sgoud@xilinx.com,
Manish Narani <mnarani@xilinx.com>
Subject: Re: [RFC PATCH] mmc: sdhci-of-arasan: Add auto tuning support for ZynqMP Platform
Date: Mon, 5 Feb 2018 00:07:40 -0600 [thread overview]
Message-ID: <20180205024420.iagez2mue2skrngq@rob-hp-laptop> (raw)
In-Reply-To: <1517336073-18142-1-git-send-email-mnarani@xilinx.com>
On Tue, Jan 30, 2018 at 11:44:33PM +0530, Manish Narani wrote:
> This patch adds support of SD auto tuning for ZynqMP platform. Auto
> tuning sequence sends tuning block to card when operating in UHS-1
> modes. This resets the DLL and sends CMD19/CMD21 as a part of the auto
> tuning process. Once the auto tuning process gets completed, reset the
> DLL to load the newly obtained SDHC tuned tap value.
>
> Signed-off-by: Manish Narani <mnarani@xilinx.com>
> ---
> .../devicetree/bindings/mmc/arasan,sdhci.txt | 1 +
> drivers/mmc/host/sdhci-of-arasan.c | 219 ++++++++++++++++++++-
> 2 files changed, 219 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> index 60481bf..7d29751 100644
> --- a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> +++ b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> @@ -14,6 +14,7 @@ Required Properties:
> - "arasan,sdhci-4.9a": generic Arasan SDHCI 4.9a PHY
> - "arasan,sdhci-5.1": generic Arasan SDHCI 5.1 PHY
> - "rockchip,rk3399-sdhci-5.1", "arasan,sdhci-5.1": rk3399 eMMC PHY
> + - "xlnx,zynqmp-8.9a": Xilinx ZynqMP 8.9a PHY
This should be a separate patch.
> For this device it is strongly suggested to include arasan,soc-ctl-syscon.
> - reg: From mmc bindings: Register location and length.
> - clocks: From clock bindings: Handles to clock inputs.
next prev parent reply other threads:[~2018-02-05 6:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-30 18:14 [RFC PATCH] mmc: sdhci-of-arasan: Add auto tuning support for ZynqMP Platform Manish Narani
2018-02-05 6:07 ` Rob Herring [this message]
[not found] ` <1517336073-18142-1-git-send-email-mnarani-gjFFaj9aHVfQT0dZR+AlfA@public.gmane.org>
2018-02-16 14:06 ` Adrian Hunter
2018-02-21 6:08 ` Manish Narani
2018-02-21 15:00 ` Manish Narani
2018-02-22 8:20 ` Adrian Hunter
2018-02-23 7:27 ` Manish Narani
2018-02-23 7:29 ` Manish Narani
2018-02-23 7:34 ` Adrian Hunter
2018-02-23 9:24 ` Manish Narani
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