From patchwork Wed Oct 26 00:56:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13020019 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 81689C38A02 for ; Wed, 26 Oct 2022 00:57:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=VuIv1ZL3ztdYYZouQ7Ax8epJfmzjjKGL4kkqK3LH2ak=; b=bQjFMcRrGF1gnN1ZAtVxpbupi2 PAUSrPYStlQHtnvaS4J4L7ZxOtoJB2RO6cVivGNBUxBdwhtzx03A8nmo/FYYgxxFmAhNCz+cb9mKe W92BgEV93UL0emvc8cvJVBxytXHsI4FhsgqRaHbZ5tWjoWGbNahbDwKJTBI7H/nkzfAaTeHc5v2qV +FrOEYelofsJLCXf/bStlTRkbijbA7MFj4R4kVyoofUrYzSDtYD8jWk+4966lO/7uxL3l3LMg5v6Z MXMzNe+g0TVnCZT0YEjHAQ71pYnhMZU78+z73DEYNFocq97g+dKZbQEGCKjgmTGBoJFTvWi+1qYZu asE6bsSQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1onUjS-007lwU-De; Wed, 26 Oct 2022 00:57:22 +0000 Received: from fudo.makrotopia.org ([2a07:2ec0:3002::71]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1onUjH-007lui-Vg; Wed, 26 Oct 2022 00:57:13 +0000 Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.94.2) (envelope-from ) id 1onUjB-0002Yp-PL; Wed, 26 Oct 2022 02:57:06 +0200 Date: Wed, 26 Oct 2022 01:56:58 +0100 From: Daniel Golle To: linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Thierry Reding , Uwe =?iso-8859-1?q?Kleine-K=F6ni?= =?iso-8859-1?q?g?= , Matthias Brugger Cc: Fabien Parent , Zhi Mao , Sam Shih Subject: [PATCH] pwm: mediatek: always use bus clock for PWM on MT7622 Message-ID: MIME-Version: 1.0 Content-Disposition: inline X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221025_175712_037076_90B8B522 X-CRM114-Status: GOOD ( 12.77 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org According to MT7622 Reference Manual for Development Board v1.0 the PWM unit found in the MT7622 SoC also comes with the PWM_CK_26M_SEL register at offset 0x210 just like other modern MediaTek ARM64 SoCs. And also MT7622 sets that register to 0x00000001 on reset which is described as 'Select 26M fix CLK as BCLK' in the datasheet. Hence set has_ck_26m_sel to true also for MT7622 which results in the driver writing 0 to the PWM_CK_26M_SEL register which is described as 'Select bus CLK as BCLK'. Fixes: 0c0ead76235db0 ("pwm: mediatek: Always use bus clock") Signed-off-by: Daniel Golle Reviewed-by: AngeloGioacchino Del Regno Acked-by: Uwe Kleine-König --- drivers/pwm/pwm-mediatek.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c index 2219cba033e348..5b5eeaff35da67 100644 --- a/drivers/pwm/pwm-mediatek.c +++ b/drivers/pwm/pwm-mediatek.c @@ -296,7 +296,7 @@ static const struct pwm_mediatek_of_data mt6795_pwm_data = { static const struct pwm_mediatek_of_data mt7622_pwm_data = { .num_pwms = 6, .pwm45_fixup = false, - .has_ck_26m_sel = false, + .has_ck_26m_sel = true, }; static const struct pwm_mediatek_of_data mt7623_pwm_data = {