linux-kernel - [PATCH v3 1/8] dt-bindings: ufs: Add #reset-cells for Qualcomm controllers

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Message-Id: <20190205185902.106085-2-evgreen@chromium.org>
Date:   Tue,  5 Feb 2019 10:58:55 -0800
From:   Evan Green <evgreen@...omium.org>
To:     Andy Gross <andy.gross@...aro.org>,
        Kishon Vijay Abraham I <kishon@...com>
Cc:     Stephen Boyd <swboyd@...omium.org>,
        Marc Gonzalez <marc.w.gonzalez@...e.fr>,
        Can Guo <cang@...eaurora.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        Douglas Anderson <dianders@...omium.org>,
        Asutosh Das <asutoshd@...eaurora.org>,
        Evan Green <evgreen@...omium.org>,
        Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org,
        liwei <liwei213@...wei.com>, linux-kernel@...r.kernel.org,
        Subhash Jadavani <subhashj@...eaurora.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Mark Rutland <mark.rutland@....com>
Subject: [PATCH v3 1/8] dt-bindings: ufs: Add #reset-cells for Qualcomm controllers

Enable Qualcomm UFS controllers to expose the PHY reset via a reset
controller.

Signed-off-by: Evan Green <evgreen@...omium.org>
Reviewed-by: Rob Herring <robh@...nel.org>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>

---
Fixing up this aspect of it made me notice that this patch [1]
hasn't landed yet. It really ought to.

[1] https://lore.kernel.org/lkml/20181012213926.253765-1-dianders@chromium.org/T/#u

Changes in v3: None
Changes in v2: None

 Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt b/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
index 8cf59452c675..e2460b666ae4 100644
--- a/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
+++ b/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
@@ -47,6 +47,8 @@ Optional properties:
 -lanes-per-direction	: number of lanes available per direction - either 1 or 2.
 			  Note that it is assume same number of lanes is used both
 			  directions at once. If not specified, default is 2 lanes per direction.
+- #reset-cells		: Must be <1> for Qualcomm UFS controllers that expose
+			  PHY reset from the UFS controller.
 - resets            : reset node register
 - reset-names       : describe reset node register, the "rst" corresponds to reset the whole UFS IP.
 
@@ -76,4 +78,5 @@ Example:
 		reset-names = "rst";
 		phys = <&ufsphy1>;
 		phy-names = "ufsphy";
+		#reset-cells = <1>;
 	};
-- 
2.20.1