From patchwork Tue Oct 17 06:01:03 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 10010801 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 292676057C for ; Tue, 17 Oct 2017 06:01:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1B6952876A for ; Tue, 17 Oct 2017 06:01:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 09CCF28768; Tue, 17 Oct 2017 06:01:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 70F122876A for ; Tue, 17 Oct 2017 06:01:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933559AbdJQGBP (ORCPT ); Tue, 17 Oct 2017 02:01:15 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:39137 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751485AbdJQGBO (ORCPT ); Tue, 17 Oct 2017 02:01:14 -0400 Received: from penelope.horms.nl (52D9BC73.cm-11-1c.dynamic.ziggo.nl [82.217.188.115]) by kirsty.vergenet.net (Postfix) with ESMTPA id 6C41725BDB3; Tue, 17 Oct 2017 17:01:11 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=verge.net.au; s=mail; t=1508220071; bh=E1ykjk/ezkrTlHPYiEc4pERNp9JnQuC095XKOKdtHbc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TiOn1UaCfcMQbxCzSpm3SzjGxHgL9ieTuEyidnTdkL2dqjLDkHTyTekaAz8vxi3Jr b4k2QJAhtW0vsZd6JAKbAIgBmYatXldCs+BY2VvP4UMDgFrGV8i9As5exVA8yBpvHV p+rYf9m8gU5BnkMr/MT8uGOl6L2c3Mk3aKS8eT9Y= Received: by penelope.horms.nl (Postfix, from userid 7100) id B8DA4E20917; Tue, 17 Oct 2017 08:01:08 +0200 (CEST) From: Simon Horman To: Wolfram Sang , Ulf Hansson Cc: Magnus Damm , linux-mmc@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Simon Horman Subject: [PATCH v3 2/3] dt-bindings: mmc: renesas_sdhi: add R-Car Gen[123] fallback compatibility strings Date: Tue, 17 Oct 2017 08:01:03 +0200 Message-Id: <20171017060104.11039-3-horms+renesas@verge.net.au> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20171017060104.11039-1-horms+renesas@verge.net.au> References: <20171017060104.11039-1-horms+renesas@verge.net.au> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add fallback compatibility strings for R-Car Gen 1, 2 and 3. In the case of Renesas R-Car hardware we know that there are generations of SoCs, f.e. Gen 1 and 2. But beyond that its not clear what the relationship between IP blocks might be. For example, I believe that r8a7790 is older than r8a7791 but that doesn't imply that the latter is a descendant of the former or vice versa. We can, however, by examining the documentation and behaviour of the hardware at run-time observe that the current driver implementation appears to be compatible with the IP blocks on SoCs within a given generation. For the above reasons and convenience when enabling new SoCs a per-generation fallback compatibility string scheme being adopted for drivers for Renesas SoCs. Signed-off-by: Simon Horman Reviewed-by: Geert Uytterhoeven --- Documentation/devicetree/bindings/mmc/tmio_mmc.txt | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt index b63392d9cc47..d9cd69ea5b86 100644 --- a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt +++ b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt @@ -10,7 +10,7 @@ described in mmc.txt, can be used. Additionally the following tmio_mmc-specific optional bindings can be used. Required properties: -- compatible: "renesas,sdhi-shmobile" - a generic sh-mobile SDHI unit +- compatible: should contain one or more of the following: "renesas,sdhi-sh73a0" - SDHI IP on SH73A0 SoC "renesas,sdhi-r7s72100" - SDHI IP on R7S72100 SoC "renesas,sdhi-r8a73a4" - SDHI IP on R8A73A4 SoC @@ -26,6 +26,16 @@ Required properties: "renesas,sdhi-r8a7794" - SDHI IP on R8A7794 SoC "renesas,sdhi-r8a7795" - SDHI IP on R8A7795 SoC "renesas,sdhi-r8a7796" - SDHI IP on R8A7796 SoC + "renesas,sdhi-shmobile" - a generic sh-mobile SDHI controller + "renesas,rcar-gen1-sdhi" - a generic R-Car Gen1 SDHI controller + "renesas,rcar-gen2-sdhi" - a generic R-Car Gen2 or RZ/G1 + SDHI controller + "renesas,rcar-gen3-sdhi" - a generic R-Car Gen3 SDHI controller + + + When compatible with the generic version nodes must list + the SoC-specific version corresponding to the platform + first followed by the generic version. - clocks: Most controllers only have 1 clock source per channel. However, on some variations of this controller, the internal card detection @@ -47,7 +57,7 @@ Optional properties: Example: R8A7790 (R-Car H2) SDHI controller nodes sdhi0: sd@ee100000 { - compatible = "renesas,sdhi-r8a7790"; + compatible = "renesas,sdhi-r8a7790", "renesas,rcar-gen2-sdhi"; reg = <0 0xee100000 0 0x328>; interrupts = ; clocks = <&cpg CPG_MOD 314>; @@ -61,7 +71,7 @@ Example: R8A7790 (R-Car H2) SDHI controller nodes }; sdhi1: sd@ee120000 { - compatible = "renesas,sdhi-r8a7790"; + compatible = "renesas,sdhi-r8a7790", "renesas,rcar-gen2-sdhi"; reg = <0 0xee120000 0 0x328>; interrupts = ; clocks = <&cpg CPG_MOD 313>; @@ -75,7 +85,7 @@ Example: R8A7790 (R-Car H2) SDHI controller nodes }; sdhi2: sd@ee140000 { - compatible = "renesas,sdhi-r8a7790"; + compatible = "renesas,sdhi-r8a7790", "renesas,rcar-gen2-sdhi"; reg = <0 0xee140000 0 0x100>; interrupts = ; clocks = <&cpg CPG_MOD 312>; @@ -89,7 +99,7 @@ Example: R8A7790 (R-Car H2) SDHI controller nodes }; sdhi3: sd@ee160000 { - compatible = "renesas,sdhi-r8a7790"; + compatible = "renesas,sdhi-r8a7790", "renesas,rcar-gen2-sdhi"; reg = <0 0xee160000 0 0x100>; interrupts = ; clocks = <&cpg CPG_MOD 311>;