From patchwork Wed Oct 18 07:00:23 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 10013531 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 E436760215 for ; Wed, 18 Oct 2017 07:01:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D7B1B28AEC for ; Wed, 18 Oct 2017 07:01:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CCDEF28AEE; Wed, 18 Oct 2017 07:01:08 +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 7C91628AEC for ; Wed, 18 Oct 2017 07:01:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933453AbdJRHBH (ORCPT ); Wed, 18 Oct 2017 03:01:07 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:57269 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932290AbdJRHBG (ORCPT ); Wed, 18 Oct 2017 03:01:06 -0400 Received: from penelope.horms.nl (unknown [217.111.208.18]) by kirsty.vergenet.net (Postfix) with ESMTPA id 505D825BE78; Wed, 18 Oct 2017 18:01:00 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=verge.net.au; s=mail; t=1508310060; bh=8JvvXSt0ZOH7nUNWOyHHZK+sAas0JrUYoQ7sTE+TBB4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Nyey9m2uhW7CqWzgO9KJXFRdtpkDr34LarxIws2/G/BKQmvi1LAqbg1/4z1Qv3/P1 50pQfZnLrias4q5O6eYORIsVq4pU/V0TqFWsfolWVSr0ld04+LGq676tLg8ihh6a7B XFUqX0+NTSiTjp6DtfwTND784/n0mVxaioccOPLw= Received: by penelope.horms.nl (Postfix, from userid 7100) id 4556BE20E8C; Wed, 18 Oct 2017 09:00:42 +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 v4 3/3] mmc: renesas_sdhi: implement R-Car Gen[123] fallback compatibility strings Date: Wed, 18 Oct 2017 09:00:23 +0200 Message-Id: <20171018070023.3878-4-horms+renesas@verge.net.au> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20171018070023.3878-1-horms+renesas@verge.net.au> References: <20171018070023.3878-1-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 Implement 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 is being adopted for drivers for Renesas SoCs. Also, improve readability by listing the shmobile fallback compatibility string after the more-specific compatibility strings they provide a fallback for. Signed-off-by: Simon Horman Reviewed-by: Geert Uytterhoeven Acked-by: Wolfram Sang --- v4 * Corrected typo in changelog --- drivers/mmc/host/renesas_sdhi_internal_dmac.c | 1 + drivers/mmc/host/renesas_sdhi_sys_dmac.c | 5 ++++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c index f905f2361d12..637c27057ac2 100644 --- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c +++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c @@ -88,6 +88,7 @@ static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = { static const struct of_device_id renesas_sdhi_internal_dmac_of_match[] = { { .compatible = "renesas,sdhi-r8a7795", .data = &of_rcar_gen3_compatible, }, { .compatible = "renesas,sdhi-r8a7796", .data = &of_rcar_gen3_compatible, }, + { .compatible = "renesas,rcar-gen3-sdhi", .data = &of_rcar_gen3_compatible, }, {}, }; MODULE_DEVICE_TABLE(of, renesas_sdhi_internal_dmac_of_match); diff --git a/drivers/mmc/host/renesas_sdhi_sys_dmac.c b/drivers/mmc/host/renesas_sdhi_sys_dmac.c index df4465439e13..9ab10436e4b8 100644 --- a/drivers/mmc/host/renesas_sdhi_sys_dmac.c +++ b/drivers/mmc/host/renesas_sdhi_sys_dmac.c @@ -91,7 +91,6 @@ static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = { }; static const struct of_device_id renesas_sdhi_sys_dmac_of_match[] = { - { .compatible = "renesas,sdhi-shmobile" }, { .compatible = "renesas,sdhi-sh73a0", .data = &of_default_cfg, }, { .compatible = "renesas,sdhi-r8a73a4", .data = &of_default_cfg, }, { .compatible = "renesas,sdhi-r8a7740", .data = &of_default_cfg, }, @@ -107,6 +106,10 @@ static const struct of_device_id renesas_sdhi_sys_dmac_of_match[] = { { .compatible = "renesas,sdhi-r8a7794", .data = &of_rcar_gen2_compatible, }, { .compatible = "renesas,sdhi-r8a7795", .data = &of_rcar_gen3_compatible, }, { .compatible = "renesas,sdhi-r8a7796", .data = &of_rcar_gen3_compatible, }, + { .compatible = "renesas,rcar-gen1-sdhi", .data = &of_rcar_gen1_compatible, }, + { .compatible = "renesas,rcar-gen2-sdhi", .data = &of_rcar_gen2_compatible, }, + { .compatible = "renesas,rcar-gen3-sdhi", .data = &of_rcar_gen3_compatible, }, + { .compatible = "renesas,sdhi-shmobile" }, {}, }; MODULE_DEVICE_TABLE(of, renesas_sdhi_sys_dmac_of_match);