From patchwork Mon Jan 23 18:56:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 645721 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF0B4C61D97 for ; Mon, 23 Jan 2023 19:01:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231650AbjAWTB2 (ORCPT ); Mon, 23 Jan 2023 14:01:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231845AbjAWTB1 (ORCPT ); Mon, 23 Jan 2023 14:01:27 -0500 X-Greylist: delayed 302 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Mon, 23 Jan 2023 11:01:25 PST Received: from xavier.telenet-ops.be (xavier.telenet-ops.be [IPv6:2a02:1800:120:4::f00:14]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8E4813586 for ; Mon, 23 Jan 2023 11:01:25 -0800 (PST) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed50:6083:1fd7:ba05:ea8d]) by xavier.telenet-ops.be with bizsmtp id CJwJ2900D4604Ck01JwJmt; Mon, 23 Jan 2023 19:56:21 +0100 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtp (Exim 4.95) (envelope-from ) id 1pK1zG-0076KK-IZ; Mon, 23 Jan 2023 19:56:18 +0100 Received: from geert by rox.of.borg with local (Exim 4.95) (envelope-from ) id 1pK1zO-00EkhF-Fa; Mon, 23 Jan 2023 19:56:18 +0100 From: Geert Uytterhoeven To: Wolfgang Grandegger , Marc Kleine-Budde , Rob Herring , Krzysztof Kozlowski , Fabrizio Castro Cc: Philipp Zabel , Ulrich Hecht , linux-can@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 04/12] can: rcar_canfd: Fix R-Car V3U CAN mode selection Date: Mon, 23 Jan 2023 19:56:06 +0100 Message-Id: <388ddf312917eb9f6cc460a481f68402a876f9b5.1674499048.git.geert+renesas@glider.be> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org When adding support for R-Car V3U, the Global FD Configuration register (CFDGFDCFG) and the Channel-specific CAN-FD Configuration Registers (CFDCmFDCFG) were mixed up. Use the correct register, and apply the selected CAN mode to all available channels. Annotate the corresponding register bits, to make it clear they do not exist on older variants. Fixes: 45721c406dcf50d4 ("can: rcar_canfd: Add support for r8a779a0 SoC") Signed-off-by: Geert Uytterhoeven --- Currently the selected CAN mode is a global setting (controlled through the "renesas,no-can-fd" DT property), but the variant on R-Car V3U and later seems to support configuring this per-channel. Whether "renesas,no-can-fd" can be made channel-specific is still to be seen, as the driver performs some global configuration based on the selected CAN mode. --- drivers/net/can/rcar/rcar_canfd.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c index f6fa7157b99b07da..88de17d0bd79d627 100644 --- a/drivers/net/can/rcar/rcar_canfd.c +++ b/drivers/net/can/rcar/rcar_canfd.c @@ -197,8 +197,8 @@ #define RCANFD_DCFG_DBRP(x) (((x) & 0xff) << 0) /* RSCFDnCFDCmFDCFG */ -#define RCANFD_FDCFG_CLOE BIT(30) -#define RCANFD_FDCFG_FDOE BIT(28) +#define RCANFD_V3U_FDCFG_CLOE BIT(30) +#define RCANFD_V3U_FDCFG_FDOE BIT(28) #define RCANFD_FDCFG_TDCE BIT(9) #define RCANFD_FDCFG_TDCOC BIT(8) #define RCANFD_FDCFG_TDCO(x) (((x) & 0x7f) >> 16) @@ -429,8 +429,8 @@ #define RCANFD_C_RPGACC(r) (0x1900 + (0x04 * (r))) /* R-Car V3U Classical and CAN FD mode specific register map */ -#define RCANFD_V3U_CFDCFG (0x1314) #define RCANFD_V3U_DCFG(m) (0x1400 + (0x20 * (m))) +#define RCANFD_V3U_FDCFG(m) (0x1404 + (0x20 * (m))) #define RCANFD_V3U_GAFL_OFFSET (0x1800) @@ -689,12 +689,13 @@ static void rcar_canfd_tx_failure_cleanup(struct net_device *ndev) static void rcar_canfd_set_mode(struct rcar_canfd_global *gpriv) { if (is_v3u(gpriv)) { - if (gpriv->fdmode) - rcar_canfd_set_bit(gpriv->base, RCANFD_V3U_CFDCFG, - RCANFD_FDCFG_FDOE); - else - rcar_canfd_set_bit(gpriv->base, RCANFD_V3U_CFDCFG, - RCANFD_FDCFG_CLOE); + u32 ch, val = gpriv->fdmode ? RCANFD_V3U_FDCFG_FDOE + : RCANFD_V3U_FDCFG_CLOE; + + for_each_set_bit(ch, &gpriv->channels_mask, + gpriv->info->max_channels) + rcar_canfd_set_bit(gpriv->base, RCANFD_V3U_FDCFG(ch), + val); } else { if (gpriv->fdmode) rcar_canfd_set_bit(gpriv->base, RCANFD_GRMCFG,