From patchwork Sat Feb 17 19:34:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Ond=C5=99ej_Jirman?= X-Patchwork-Id: 13561525 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 0B453C48BC3 for ; Sat, 17 Feb 2024 19:35:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=5KmSTUJW3l9069zcBGiZ295YgH7hMJcaqJd79Wxwc24=; b=RV2CYFH9fKaVb1 b1K20Oz0P1qlbf59+ysvD2/UYxDN5DeDixn3rylJJgS5TYGY0XsOkPc7WSivclAlWkSASejmEoObS SEe13NOEIe8tw48P05maG8kziJQLbkG2myXKahd9DgqhRyhCIsk8RSKBeRlW8OW++JPiRp6R9reZF eeSRYFwdkR/XDdbhklqLQoP6tgorLmsSinMU599TnCv9JWAZwtGg+qn2gYLcvWzz01OJ/A7YnzAWC tij/P79TaOM1P3OA+Q2O12KGUt+xiWt2VgiCzWx7HEzheiosCz4HhakMUgfx2fs/1xTuLei37N2PO LgRkxpBhTk5Gg+QpvNBA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rbQSb-00000006FAy-31mm; Sat, 17 Feb 2024 19:34:53 +0000 Received: from vps.xff.cz ([195.181.215.36]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rbQSZ-00000006FAT-0cF4; Sat, 17 Feb 2024 19:34:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xff.cz; s=mail; t=1708198486; bh=GDFM2rZjlq+HPVr5razRyWgRuOojfXjQpD41VCj6WJY=; h=From:To:Cc:Subject:Date:From; b=koCjUDSTKjRT3baQHGvj+LqngJ9+yqKbWdCO+vXaVwYn6hV/KgPGObAmwnk5sQluq 6iRuz4k3AF54CcMNRhSX+gC/HMCJR+xyIJ3vMOb+uLv0DId1tI3lQ+qEeZ0+xFdxSO 2lhUMqp1AWmtA4BcN5zsLg9LtWJLooreCPzePf6k= From: =?utf-8?q?Ond=C5=99ej_Jirman?= To: linux-kernel@vger.kernel.org Cc: Ondrej Jirman , Michael Turquette , Stephen Boyd , Heiko Stuebner , linux-clk@vger.kernel.org (open list:COMMON CLK FRAMEWORK), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Rockchip SoC support), linux-rockchip@lists.infradead.org (open list:ARM/Rockchip SoC support) Subject: [PATCH] clk: rk3399: Allow to set rate of clk_i2s0_frac's parent Date: Sat, 17 Feb 2024 20:34:38 +0100 Message-ID: <20240217193439.1762213-1-megi@xff.cz> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240217_113451_368206_4CA6D194 X-CRM114-Status: UNSURE ( 9.86 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Ondrej Jirman Otherwise when when clk_i2s0 muxes to clk_i2s0_div which requires setting high divider value on clk_i2s0_div, and then muxes back to clk_i2s0_frac, clk_i2s0_frac would have no way to change the clk_i2s0_div's divider ratio back to 1 so that it can satisfy the condition for m/n > 20 for fractional division to work correctly. Bug is reproducible by playing 44.1k audio, then 48k audio, and then 44.1k audio again. This results in clk_i2s0_div being set to 49 and clk_i2s0_frac not being able to cope with such a low input clock rate and audio playing extremely slowly. The identical issue is on i2s1 and i2s2 clocks, too. Signed-off-by: Ondrej Jirman --- drivers/clk/rockchip/clk-rk3399.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c index 5efac2ca3048..a17996acd065 100644 --- a/drivers/clk/rockchip/clk-rk3399.c +++ b/drivers/clk/rockchip/clk-rk3399.c @@ -597,7 +597,7 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = { COMPOSITE(0, "clk_i2s0_div", mux_pll_src_cpll_gpll_p, 0, RK3399_CLKSEL_CON(28), 7, 1, MFLAGS, 0, 7, DFLAGS, RK3399_CLKGATE_CON(8), 3, GFLAGS), - COMPOSITE_FRACMUX(0, "clk_i2s0_frac", "clk_i2s0_div", 0, + COMPOSITE_FRACMUX(0, "clk_i2s0_frac", "clk_i2s0_div", CLK_SET_RATE_PARENT, RK3399_CLKSEL_CON(96), 0, RK3399_CLKGATE_CON(8), 4, GFLAGS, &rk3399_i2s0_fracmux), @@ -607,7 +607,7 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = { COMPOSITE(0, "clk_i2s1_div", mux_pll_src_cpll_gpll_p, 0, RK3399_CLKSEL_CON(29), 7, 1, MFLAGS, 0, 7, DFLAGS, RK3399_CLKGATE_CON(8), 6, GFLAGS), - COMPOSITE_FRACMUX(0, "clk_i2s1_frac", "clk_i2s1_div", 0, + COMPOSITE_FRACMUX(0, "clk_i2s1_frac", "clk_i2s1_div", CLK_SET_RATE_PARENT, RK3399_CLKSEL_CON(97), 0, RK3399_CLKGATE_CON(8), 7, GFLAGS, &rk3399_i2s1_fracmux), @@ -617,7 +617,7 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = { COMPOSITE(0, "clk_i2s2_div", mux_pll_src_cpll_gpll_p, 0, RK3399_CLKSEL_CON(30), 7, 1, MFLAGS, 0, 7, DFLAGS, RK3399_CLKGATE_CON(8), 9, GFLAGS), - COMPOSITE_FRACMUX(0, "clk_i2s2_frac", "clk_i2s2_div", 0, + COMPOSITE_FRACMUX(0, "clk_i2s2_frac", "clk_i2s2_div", CLK_SET_RATE_PARENT, RK3399_CLKSEL_CON(98), 0, RK3399_CLKGATE_CON(8), 10, GFLAGS, &rk3399_i2s2_fracmux),