From mboxrd@z Thu Jan  1 00:00:00 1970
From: Fabrizio Castro <fabrizio.castro-kTT6dE0pTRh9uiUsa/gSgQ@public.gmane.org>
Subject: [RFC 11/37] soc: renesas: rcar-rst: Document generic compatible strings
Date: Thu, 25 Jan 2018 18:02:45 +0000
Message-ID: <1516903391-30467-12-git-send-email-fabrizio.castro@bp.renesas.com>
References: <1516903391-30467-1-git-send-email-fabrizio.castro@bp.renesas.com>
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To: Philipp Zabel <p.zabel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>, Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>, Wim Van Sebroeck <wim-IQzOog9fTRqzQB+pC5nmwQ@public.gmane.org>, Russell King <linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org>, Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>, Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>, Michael Turquette <mturquette-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>, Stephen Boyd <sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>, Simon Horman <horms-/R6kz+dDXgpPR4JQBCEnsQ@public.gmane.org>, Magnus Damm <magnus.damm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Geert Uytterhoeven <geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org>
Cc: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-clk-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Chris Paterson <Chris.Paterson2-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org>, Biju Das <biju.das-kTT6dE0pTRh9uiUsa/gSgQ@public.gmane.org>, Fabrizio Castro <fabrizio.castro-kTT6dE0pTRh9uiUsa/gSgQ@public.gmane.org>, Ramesh Shanmugasundaram <ramesh.shanmugasundaram-kTT6dE0pTRh9uiUsa/gSgQ@public.gmane.org>
List-Id: devicetree@vger.kernel.org

>>From now on, devices compatible with the generic compatible strings
documented by this commit don't need to modify the corresponding driver
anymore.

Signed-off-by: Fabrizio Castro <fabrizio.castro-kTT6dE0pTRh9uiUsa/gSgQ@public.gmane.org>
Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram-kTT6dE0pTRh9uiUsa/gSgQ@public.gmane.org>
---
 Documentation/devicetree/bindings/reset/renesas,rst.txt | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/reset/renesas,rst.txt b/Documentation/devicetree/bindings/reset/renesas,rst.txt
index a8014f3..2602a19 100644
--- a/Documentation/devicetree/bindings/reset/renesas,rst.txt
+++ b/Documentation/devicetree/bindings/reset/renesas,rst.txt
@@ -11,7 +11,10 @@ following functions:
 
 
 Required properties:
-  - compatible: Should be
+  - compatible: Should be a SoC specific string, followed by a generic
+		fallback compatible string when compatible with the generic
+		version.
+		The SoC specific compatible string should be:
 		  - "renesas,<soctype>-reset-wdt" for R-Car Gen1,
 		  - "renesas,<soctype>-rst" for R-Car Gen2 and Gen3, and RZ/G
 		Examples with soctypes are:
@@ -28,12 +31,16 @@ Required properties:
 		  - "renesas,r8a7796-rst" (R-Car M3-W)
 		  - "renesas,r8a77970-rst" (R-Car V3M)
 		  - "renesas,r8a77995-rst" (R-Car D3)
+		The generic compatible string should be:
+		  - "renesas,rcar-gen1-rst" for R-Car Gen1
+		  - "renesas,rcar-gen2-rst" for R-Car Gen2 and RZ/G
+		  - "renesas,rcar-gen3-rst" for R-Car Gen3
   - reg: Address start and address range for the device.
 
 
 Example:
 
 	rst: reset-controller@e6160000 {
-		compatible = "renesas,r8a7795-rst";
+		compatible = "renesas,r8a7795-rst", "renesas,rcar-gen3-rst";
 		reg = <0 0xe6160000 0 0x0200>;
 	};
-- 
2.7.4

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