From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE312C2D0E2 for ; Tue, 22 Sep 2020 14:44:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AE6072395C for ; Tue, 22 Sep 2020 14:44:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726700AbgIVOor (ORCPT ); Tue, 22 Sep 2020 10:44:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726620AbgIVOog (ORCPT ); Tue, 22 Sep 2020 10:44:36 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B03DC0613CF for ; Tue, 22 Sep 2020 07:44:36 -0700 (PDT) Received: from heimdall.vpn.pengutronix.de ([2001:67c:670:205:1d::14] helo=blackshift.org) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1kKjX0-0001FU-Ps; Tue, 22 Sep 2020 16:44:34 +0200 From: Marc Kleine-Budde To: linux-can@vger.kernel.org Cc: kernel@pengutronix.de, michael@walle.cc, qiangqing.zhang@nxp.com, Marc Kleine-Budde Subject: [PATCH 04/20] can: flexcan: struct flexcan_regs: document registers not affected by soft reset Date: Tue, 22 Sep 2020 16:44:13 +0200 Message-Id: <20200922144429.2613631-5-mkl@pengutronix.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200922144429.2613631-1-mkl@pengutronix.de> References: <20200922144429.2613631-1-mkl@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2001:67c:670:205:1d::14 X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-can@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org This patch documents which registers are not affected by a soft reset of the flexcan IP core. Signed-off-by: Marc Kleine-Budde --- drivers/net/can/flexcan.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index c24d7b63e1b9..224000f53a88 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -203,12 +203,12 @@ struct flexcan_mb { /* Structure of the hardware registers */ struct flexcan_regs { u32 mcr; /* 0x00 */ - u32 ctrl; /* 0x04 */ + u32 ctrl; /* 0x04 - Not affected by Soft Reset */ u32 timer; /* 0x08 */ u32 tcr; /* 0x0c */ - u32 rxgmask; /* 0x10 */ - u32 rx14mask; /* 0x14 */ - u32 rx15mask; /* 0x18 */ + u32 rxgmask; /* 0x10 - Not affected by Soft Reset */ + u32 rx14mask; /* 0x14 - Not affected by Soft Reset */ + u32 rx15mask; /* 0x18 - Not affected by Soft Reset */ u32 ecr; /* 0x1c */ u32 esr; /* 0x20 */ u32 imask2; /* 0x24 */ @@ -217,20 +217,20 @@ struct flexcan_regs { u32 iflag1; /* 0x30 */ union { /* 0x34 */ u32 gfwr_mx28; /* MX28, MX53 */ - u32 ctrl2; /* MX6, VF610 */ + u32 ctrl2; /* MX6, VF610 - Not affected by Soft Reset */ }; u32 esr2; /* 0x38 */ u32 imeur; /* 0x3c */ u32 lrfr; /* 0x40 */ u32 crcr; /* 0x44 */ u32 rxfgmask; /* 0x48 */ - u32 rxfir; /* 0x4c */ - u32 cbt; /* 0x50 */ + u32 rxfir; /* 0x4c - Not affected by Soft Reset */ + u32 cbt; /* 0x50 - Not affected by Soft Reset */ u32 _reserved2; /* 0x54 */ u32 dbg1; /* 0x58 */ u32 dbg2; /* 0x5c */ u32 _reserved3[8]; /* 0x60 */ - u8 mb[2][512]; /* 0x80 */ + u8 mb[2][512]; /* 0x80 - Not affected by Soft Reset */ /* FIFO-mode: * MB * 0x080...0x08f 0 RX message buffer @@ -242,7 +242,7 @@ struct flexcan_regs { * (mx6, vf610) */ u32 _reserved4[256]; /* 0x480 */ - u32 rximr[64]; /* 0x880 */ + u32 rximr[64]; /* 0x880 - Not affected by Soft Reset */ u32 _reserved5[24]; /* 0x980 */ u32 gfwr_mx6; /* 0x9e0 - MX6 */ u32 _reserved6[63]; /* 0x9e4 */ @@ -255,8 +255,8 @@ struct flexcan_regs { u32 rerrsynr; /* 0xaf8 */ u32 errsr; /* 0xafc */ u32 _reserved7[64]; /* 0xb00 */ - u32 fdctrl; /* 0xc00 */ - u32 fdcbt; /* 0xc04 */ + u32 fdctrl; /* 0xc00 - Not affected by Soft Reset */ + u32 fdcbt; /* 0xc04 - Not affected by Soft Reset */ u32 fdcrc; /* 0xc08 */ }; -- 2.28.0