From patchwork Fri Aug 26 10:56:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 12955879 X-Patchwork-Delegate: kuba@kernel.org 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 4036CECAAA3 for ; Fri, 26 Aug 2022 10:57:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344217AbiHZK5X (ORCPT ); Fri, 26 Aug 2022 06:57:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344131AbiHZK5A (ORCPT ); Fri, 26 Aug 2022 06:57:00 -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 12843979CE for ; Fri, 26 Aug 2022 03:56:56 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oRX0x-0002ue-3H; Fri, 26 Aug 2022 12:56:39 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1oRX0w-0024Z9-1b; Fri, 26 Aug 2022 12:56:38 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1oRX0t-00GB34-HO; Fri, 26 Aug 2022 12:56:35 +0200 From: Oleksij Rempel To: Woojung Huh , UNGLinuxDriver@microchip.com, Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH net-next v4 08/17] net: dsa: microchip: KSZ9893: do not write to not supported Output Clock Control Register Date: Fri, 26 Aug 2022 12:56:25 +0200 Message-Id: <20220826105634.3855578-9-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220826105634.3855578-1-o.rempel@pengutronix.de> References: <20220826105634.3855578-1-o.rempel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This issue was detected after adding regmap register access validation. KSZ9893 compatible chips do not have "Output Clock Control Register 0x0103". So, avoid writing to it. Signed-off-by: Oleksij Rempel Reviewed-by: Vladimir Oltean --- drivers/net/dsa/microchip/ksz9477.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index f60ceaf25a66c..fb9de6b447b12 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -193,6 +193,11 @@ int ksz9477_reset_switch(struct ksz_device *dev) ksz_write32(dev, REG_SW_PORT_INT_MASK__4, 0x7F); ksz_read32(dev, REG_SW_PORT_INT_STATUS__4, &data32); + /* KSZ9893 compatible chips do not support refclk configuration */ + if (dev->chip_id == KSZ9893_CHIP_ID || + dev->chip_id == KSZ8563_CHIP_ID) + return 0; + data8 = SW_ENABLE_REFCLKO; if (dev->synclko_disable) data8 = 0;