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 177C9C7115A for ; Wed, 18 Jun 2025 10:51:38 +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:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=csmteFouc6TW65m4a5Ll173uLS4YQs9Pss8Dhi0EAz4=; b=LVez+SjDb/rhgD H8PgdpytYCrgtung2ZS8+uZNXNVWW8fALgxXJehH8TYX5r4zqNgGI5JFkyjw2sjF0XdTMDiu/1YJG NAJcVTIMizga2KB0TsJui6+bEPB5q2EsAn+/uq0HHE2FF35pY6DPtxh4cBxOkb2OLbdUcXHr0deH6 4H+qo/UNX8mJToONlzqfVgertdQyxJNSmZ5cIyWaHcWhLYyxGuKSY0og7JFgIKvCC5PONX39z3msc mkH55UvcgYR0ros8Bi8/Mt2uyDiH1IWaYOlyz+D1iRLmdQPUTRLdzvMNAT0LzrGg6FcW3/bzIobv8 pvraqyEAHvpO7SLXEy7A==; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Hi, On 02/05/2025 06:34, Devarsh Thakkar wrote: > PLL lockup and O_CMN_READY assertion can only happen after common state > machine gets enabled (by programming DPHY_CMN_SSM register), but driver was > polling them before the common state machine was enabled. To fix this : > > - Add new function callbacks for polling on PLL lock and O_CMN_READY > assertion. > - As state machine and clocks get enabled in power_on callback only, move > the clock related programming part from configure callback to power_on > callback and poll for the PLL lockup and O_CMN_READY assertion after > state machine gets enabled. > - The configure callback only saves the PLL configuration received from the > client driver which will be applied later on in power_on callback. > - Add checks to ensure configure is called before power_on and state > machine is in disabled state before power_on callback is called. > - Disable state machine in power_off so that client driver can > re-configure the PLL by following up a power_off, configure, power_on > sequence. > > Cc: stable@vger.kernel.org > Fixes: 7a343c8bf4b5 ("phy: Add Cadence D-PHY support") > Signed-off-by: Devarsh Thakkar > --- > V3: > - Move out clock programming logic to power_on as PLL polling and enable > can happen only after SSM enable > - Disable state machine on power off > > V2: > - Return error code on polling timeout > - Moved out calibration logic to separate patch > > drivers/phy/cadence/cdns-dphy.c | 109 +++++++++++++++++++++++++------- > 1 file changed, 85 insertions(+), 24 deletions(-) > > diff --git a/drivers/phy/cadence/cdns-dphy.c b/drivers/phy/cadence/cdns-dphy.c > index ed87a3970f83..a94109a63788 100644 > --- a/drivers/phy/cadence/cdns-dphy.c > +++ b/drivers/phy/cadence/cdns-dphy.c > @@ -79,6 +79,7 @@ struct cdns_dphy_cfg { > u8 pll_ipdiv; > u8 pll_opdiv; > u16 pll_fbdiv; > + u64 hs_clk_rate; This has a minor conflict with my cdns-dsi series, as I also add hs_clk_rate but as u32. Also, applying both serieses, cdns_dphy_config_from_opts() becomes odd as the hs_clk_rate will be assigned back and forth between opts and cfg. Can you check this? Tomi -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy