From patchwork Thu Nov 12 01:53:59 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 543173 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id EA5241402C6 for ; Thu, 12 Nov 2015 12:54:50 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=verge.net.au header.i=@verge.net.au header.b=TFiEgU8K; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752511AbbKLByd (ORCPT ); Wed, 11 Nov 2015 20:54:33 -0500 Received: from kirsty.vergenet.net ([202.4.237.240]:32924 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752394AbbKLByc (ORCPT ); Wed, 11 Nov 2015 20:54:32 -0500 Received: from reginn.isobedori.kobe.vergenet.net (p5254-ipbfp1403kobeminato.hyogo.ocn.ne.jp [114.152.48.254]) by kirsty.vergenet.net (Postfix) with ESMTPA id BA68D25B7BC; Thu, 12 Nov 2015 12:54:29 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=verge.net.au; s=mail; t=1447293269; bh=21e/37Kgz89GMLnM13cic4kwI8zNXAHHdNTqEYVt/40=; h=From:To:Cc:Subject:Date:From; b=TFiEgU8K/tam6iCde8ASIwJ8Llb2RzjsH7qj+SnCe+F2dgf5fdSWmcsBRN5Co7aB7 tq+fyqWBWePuxN9+HTfipLq8Ot2ubKG5BkC3aVjEODbF8xWkTAvajvABr/gdiVYS1K K6eTLbvOJZ35lNL71btC7Y4RA7F6C4rmQemQaFjw= Received: by reginn.isobedori.kobe.vergenet.net (Postfix, from userid 7100) id 6FA1C94059F; Thu, 12 Nov 2015 10:54:28 +0900 (JST) From: Simon Horman To: Vinod Koul Cc: dmaengine@vger.kernel.org, linux-sh@vger.kernel.org, Magnus Damm , Simon Horman , devicetree@vger.kernel.org, Laurent Pinchart Subject: [PATCH] dmaengine: rcar-dmac: Document SoC specific bindings Date: Thu, 12 Nov 2015 10:53:59 +0900 Message-Id: <1447293239-8554-1-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 2.1.4 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org In general Renesas hardware is not documented to the extent where the relationship between IP blocks on different SoCs can be assumed although they may appear to operate the same way. Furthermore the documentation typically does not specify a version for individual IP blocks. For these reasons a convention of using the SoC name in place of a version and providing SoC-specific compat strings has been adopted. Although not universally liked this convention is used in the bindings for most drivers for Renesas hardware. The purpose of this patch is to update the Renesas R-Car DMA Controller driver to follow this convention. Cc: devicetree@vger.kernel.org Cc: Magnus Damm Cc: Laurent Pinchart Signed-off-by: Simon Horman Acked-by: Geert Uytterhoeven Acked-by: Rob Herring --- Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) Once this has been merged I intend to provide follow-up patches to use these new compat strings in the relevant dtsi files. diff --git a/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt b/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt index 09daeef1ff22..5b902ac8d97e 100644 --- a/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt +++ b/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt @@ -14,7 +14,14 @@ not described in these device tree bindings. Required Properties: -- compatible: must contain "renesas,rcar-dmac" +- compatible: "renesas,dmac-", "renesas,rcar-dmac" as fallback. + Examples with soctypes are: + - "renesas,dmac-r8a7790" (R-Car H2) + - "renesas,dmac-r8a7791" (R-Car M2-W) + - "renesas,dmac-r8a7792" (R-Car V2H) + - "renesas,dmac-r8a7793" (R-Car M2-N) + - "renesas,dmac-r8a7794" (R-Car E2) + - "renesas,dmac-r8a7795" (R-Car H3) - reg: base address and length of the registers block for the DMAC @@ -35,7 +42,7 @@ Required Properties: Example: R8A7790 (R-Car H2) SYS-DMACs dmac0: dma-controller@e6700000 { - compatible = "renesas,rcar-dmac"; + compatible = "renesas,dmac-r8a7790", "renesas,rcar-dmac"; reg = <0 0xe6700000 0 0x20000>; interrupts = <0 197 IRQ_TYPE_LEVEL_HIGH 0 200 IRQ_TYPE_LEVEL_HIGH @@ -65,7 +72,7 @@ Example: R8A7790 (R-Car H2) SYS-DMACs }; dmac1: dma-controller@e6720000 { - compatible = "renesas,rcar-dmac"; + compatible = "renesas,dmac-r8a7790", "renesas,rcar-dmac"; reg = <0 0xe6720000 0 0x20000>; interrupts = <0 220 IRQ_TYPE_LEVEL_HIGH 0 216 IRQ_TYPE_LEVEL_HIGH