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 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 619BDCF31A0 for ; Wed, 2 Oct 2024 08:18:25 +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: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: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:List-Owner; bh=6XX/IddAHu0DsNqgzpMUg94L+z/qNDIbA+BRdMiX+0Q=; b=VKtHIhbK4YToXHds0Q+DSv4ZWD HqfQHoW9CpVKEYzV5d/d/jZRN6HH3D0WRNIJueeHQFK97ocTagNAICLa6tnEBGBcpVhpvrUbRUKh+ Bj6/+xjpdLFJEdwj5PMCR8nFKSJs+8/ssV0FZWmgIKKhZ/iKNxyHby8y8LksQYltbyZxHXTqC+rbR yE1Kb5qwHBpI4rrfSHvKnp9oXsYkr9OcFg3mSxDopK5mn/F3OIwD6e1m/VskszLioTTiCAMvwdQK0 2p8c6I+7dDyXU6004Sr93aMczoixjECdOW8QE+9UgsPe6Kzd0Qyebk6nwUTiEOeV1KO1aOrRdjmW9 L3/IbaQw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1svuYk-000000058t5-1CZs; Wed, 02 Oct 2024 08:18:10 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1svuXV-000000058kg-0FX3; Wed, 02 Oct 2024 08:16:54 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Type:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=6XX/IddAHu0DsNqgzpMUg94L+z/qNDIbA+BRdMiX+0Q=; b=QmQhCDm0eIlStLrzhgfkbtdh3q MOq7KBMzSsP9037c73W/A7vEmk3RjT1zVKhHGmEjPdYJFiLadzYG0sCOuhvNurheX5cGG/6cNdEy6 SAZoBXnlQEp//fP+327dtYdcZvmPAE8a3bzoTPVSWOPUfid11mdpDQWyf2ADXTZKyfNgmvz23BjHn nzSwMJSl1AV4BRRvLDFI+j6DdDWJGRx+u/eoOtHUcekpf9kGw0og1v+lZYBhc0FVtIgY+d5rb+UBn J9Yct4VWGuHBetp9BulqntEode/M6TavMMLl1vNBzTwR+JyQ8w/BlyMKF2X+LfFAVabfJLcCx+9Gk 1u/CE2ug==; Received: from i53875aa1.versanet.de ([83.135.90.161] helo=diego.localnet) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1svuXS-00036k-0G; Wed, 02 Oct 2024 10:16:50 +0200 From: Heiko =?ISO-8859-1?Q?St=FCbner?= To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Yao Zi Cc: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Celeste Liu , Yao Zi Subject: Re: [PATCH 4/8] clk: rockchip: Add PLL flag ROCKCHIP_PLL_FIXED_MODE Date: Wed, 02 Oct 2024 10:16:49 +0200 Message-ID: <8495918.NyiUUSuA9g@diego> In-Reply-To: <20241001042401.31903-6-ziyao@disroot.org> References: <20241001042401.31903-2-ziyao@disroot.org> <20241001042401.31903-6-ziyao@disroot.org> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241002_011653_136462_C52107DE X-CRM114-Status: GOOD ( 23.82 ) 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 Hi, Am Dienstag, 1. Oktober 2024, 06:23:58 CEST schrieb Yao Zi: > RK3528 comes with a new PLL type, flagged by ROCKCHIP_PLL_FIXED_MODE, > which should operate in normal mode only. Add corresponding definition > and handle it in code. > More commit message would be nice ;-) . It's the PPLL for the pcie controller that is specified in the manual to only work in normal mode. This is helpful for people reading along :-) . Heiko > Signed-off-by: Yao Zi > --- > drivers/clk/rockchip/clk-pll.c | 10 ++++++---- > drivers/clk/rockchip/clk.h | 2 ++ > 2 files changed, 8 insertions(+), 4 deletions(-) > > diff --git a/drivers/clk/rockchip/clk-pll.c b/drivers/clk/rockchip/clk-pll.c > index 606ce5458f54..46be1c67301a 100644 > --- a/drivers/clk/rockchip/clk-pll.c > +++ b/drivers/clk/rockchip/clk-pll.c > @@ -204,10 +204,12 @@ static int rockchip_rk3036_pll_set_params(struct rockchip_clk_pll *pll, > rockchip_rk3036_pll_get_params(pll, &cur); > cur.rate = 0; > > - cur_parent = pll_mux_ops->get_parent(&pll_mux->hw); > - if (cur_parent == PLL_MODE_NORM) { > - pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_SLOW); > - rate_change_remuxed = 1; > + if (!(pll->flags & ROCKCHIP_PLL_FIXED_MODE)) { > + cur_parent = pll_mux_ops->get_parent(&pll_mux->hw); > + if (cur_parent == PLL_MODE_NORM) { > + pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_SLOW); > + rate_change_remuxed = 1; > + } > } > > /* update pll values */ > diff --git a/drivers/clk/rockchip/clk.h b/drivers/clk/rockchip/clk.h > index fd3b476dedda..1efc5c3a1e77 100644 > --- a/drivers/clk/rockchip/clk.h > +++ b/drivers/clk/rockchip/clk.h > @@ -391,6 +391,7 @@ struct rockchip_pll_rate_table { > * Flags: > * ROCKCHIP_PLL_SYNC_RATE - check rate parameters to match against the > * rate_table parameters and ajust them if necessary. > + * ROCKCHIP_PLL_FIXED_MODE - the pll operates in normal mode only > */ > struct rockchip_pll_clock { > unsigned int id; > @@ -408,6 +409,7 @@ struct rockchip_pll_clock { > }; > > #define ROCKCHIP_PLL_SYNC_RATE BIT(0) > +#define ROCKCHIP_PLL_FIXED_MODE BIT(1) > > #define PLL(_type, _id, _name, _pnames, _flags, _con, _mode, _mshift, \ > _lshift, _pflags, _rtable) \ >