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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9AD13C433EF for ; Wed, 18 May 2022 09:29:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234244AbiERJ3r (ORCPT ); Wed, 18 May 2022 05:29:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34188 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234179AbiERJ3p (ORCPT ); Wed, 18 May 2022 05:29:45 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23CAD939A4; Wed, 18 May 2022 02:29:32 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id CB8D9B81EF6; Wed, 18 May 2022 09:29:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D3214C385A5; Wed, 18 May 2022 09:29:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652866169; bh=mxYfw+GinqAjrXTEOeZE9mJTILflufdqzdNKepyHGvs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=WnuDNuac+vgJ5XGYkmYhG9vNk3/I6KnCpiWaFtwNmTHgasum5pAR9I1Ia8/AVt6DN F3NuWnnkUTtKb9iOCd3/oC5u/Am6hb7Kg3DyrmvwrHrqkFFCcrYF1K62y+uJaM3Deg rpfqlGmc4TCKfQaB7wVFZQqjMtEj8LqJWUrYIWrhoClQs6eTv/AGwqPTkCTM5NSHlb cN8+C18E4CAWIF4nXhVX20/3ZV1YHMEzIXYds4gOYHvqg4joiG39+Kjp8tbbiglhX8 Cx/Mho/xgs/KvziMEuryCU+NLzLcbSlWPQvSyC0y/LHz17ajEWeXM9VDOT2qFu4yo1 euk6Iv9GMxRcg== Date: Wed, 18 May 2022 14:59:24 +0530 From: Vinod Koul To: Kuogee Hsieh Cc: dri-devel@lists.freedesktop.org, robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org, dianders@chromium.org, daniel@ffwll.ch, airlied@linux.ie, agross@kernel.org, dmitry.baryshkov@linaro.org, bjorn.andersson@linaro.org, quic_abhinavk@quicinc.com, quic_aravindh@quicinc.com, quic_sbillaka@quicinc.com, freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1 1/2] phy/qcom: add regulator_set_load to edp/dp phy Message-ID: References: <1652808360-9830-1-git-send-email-quic_khsieh@quicinc.com> <1652808360-9830-2-git-send-email-quic_khsieh@quicinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1652808360-9830-2-git-send-email-quic_khsieh@quicinc.com> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On 17-05-22, 10:25, Kuogee Hsieh wrote: pls use the correct subsystem tag, "phy: xxx" in this case > This patch add regulator_set_load() to both eDP and DP phy driver > to have totally control regulators. Can you explain what is meant by "totally control regulators" > > Signed-off-by: Kuogee Hsieh > --- > drivers/phy/qualcomm/phy-qcom-edp.c | 25 +++++++++++++++++++++---- > drivers/phy/qualcomm/phy-qcom-qmp.c | 24 ++++++++++++++++++++++++ > 2 files changed, 45 insertions(+), 4 deletions(-) > > diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c > index cacd32f..9b55095 100644 > --- a/drivers/phy/qualcomm/phy-qcom-edp.c > +++ b/drivers/phy/qualcomm/phy-qcom-edp.c > @@ -87,17 +87,24 @@ struct qcom_edp { > > struct clk_bulk_data clks[2]; > struct regulator_bulk_data supplies[2]; > + int enable_load[2]; > + int disable_load[2]; > }; > > static int qcom_edp_phy_init(struct phy *phy) > { > struct qcom_edp *edp = phy_get_drvdata(phy); > int ret; > + int num_consumers = ARRAY_SIZE(edp->supplies); > + int i; > > - ret = regulator_bulk_enable(ARRAY_SIZE(edp->supplies), edp->supplies); > + ret = regulator_bulk_enable(num_consumers, edp->supplies); > if (ret) > return ret; > > + for (i = num_consumers - 1; i >= 0; --i) > + regulator_set_load(edp->supplies[i].consumer, edp->enable_load[i]); > + > ret = clk_bulk_prepare_enable(ARRAY_SIZE(edp->clks), edp->clks); > if (ret) > goto out_disable_supplies; > @@ -425,9 +432,15 @@ static int qcom_edp_phy_power_off(struct phy *phy) > static int qcom_edp_phy_exit(struct phy *phy) > { > struct qcom_edp *edp = phy_get_drvdata(phy); > + int num_consumers = ARRAY_SIZE(edp->supplies); > + int i; > > clk_bulk_disable_unprepare(ARRAY_SIZE(edp->clks), edp->clks); > - regulator_bulk_disable(ARRAY_SIZE(edp->supplies), edp->supplies); > + > + for (i = num_consumers - 1; i >= 0; --i) > + regulator_set_load(edp->supplies[i].consumer, edp->disable_load[i]); > + > + regulator_bulk_disable(num_consumers, edp->supplies); > > return 0; > } > @@ -633,8 +646,12 @@ static int qcom_edp_phy_probe(struct platform_device *pdev) > if (ret) > return ret; > > - edp->supplies[0].supply = "vdda-phy"; > - edp->supplies[1].supply = "vdda-pll"; > + edp->supplies[0].supply = "vdda-1p2"; > + edp->supplies[1].supply = "vdda-0p9"; These are documented in bindings, so cannot be removed, Reminder binding is an ABI You have not documented the new names either... > + edp->enable_load[0] = 21800; /* 1.2 V */ > + edp->enable_load[1] = 36000; /* 1.2 V */ > + edp->disable_load[0] = 4; /* 0.9 V */ > + edp->disable_load[1] = 4; /* 10.9V */ is that correct, 10.9V? > ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(edp->supplies), edp->supplies); > if (ret) > return ret; > diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c > index b144ae1..c589231 100644 > --- a/drivers/phy/qualcomm/phy-qcom-qmp.c > +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c This is a different driver, so should be a different patch! > @@ -3130,6 +3130,8 @@ struct qmp_phy_cfg { > int num_resets; > /* regulators to be requested */ > const char * const *vreg_list; > + const unsigned int *vreg_enable_load; > + const unsigned int *vreg_disable_load; > int num_vregs; > > /* array of registers with different offsets */ > @@ -3346,6 +3348,14 @@ static const char * const qmp_phy_vreg_l[] = { > "vdda-phy", "vdda-pll", > }; > > +static const unsigned int qmp_phy_vreg_enable_load[] = { > + 21800, 36000 > +}; > + > +static const unsigned int qmp_phy_vreg_disable_load[] = { > + 4, 32 > +}; > + > static const struct qmp_phy_cfg ipq8074_usb3phy_cfg = { > .type = PHY_TYPE_USB3, > .nlanes = 1, > @@ -4072,6 +4082,8 @@ static const struct qmp_phy_cfg sm8250_usb3phy_cfg = { > .reset_list = msm8996_usb3phy_reset_l, > .num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l), > .vreg_list = qmp_phy_vreg_l, > + .vreg_enable_load = qmp_phy_vreg_enable_load, > + .vreg_disable_load = qmp_phy_vreg_disable_load, > .num_vregs = ARRAY_SIZE(qmp_phy_vreg_l), > .regs = qmp_v4_usb3phy_regs_layout, > > @@ -4139,6 +4151,8 @@ static const struct qmp_phy_cfg sm8250_dpphy_cfg = { > .reset_list = msm8996_usb3phy_reset_l, > .num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l), > .vreg_list = qmp_phy_vreg_l, > + .vreg_enable_load = qmp_phy_vreg_enable_load, > + .vreg_disable_load = qmp_phy_vreg_disable_load, > .num_vregs = ARRAY_SIZE(qmp_phy_vreg_l), > .regs = qmp_v4_usb3phy_regs_layout, > > @@ -5015,6 +5029,11 @@ static int qcom_qmp_phy_com_init(struct qmp_phy *qphy) > goto err_reg_enable; > } > > + if (cfg->vreg_enable_load) { > + for (i = cfg->num_vregs - 1; i >= 0; --i) > + regulator_set_load(qmp->vregs[i].consumer, cfg->vreg_enable_load[i]); > + } > + > for (i = 0; i < cfg->num_resets; i++) { > ret = reset_control_assert(qmp->resets[i]); > if (ret) { > @@ -5116,6 +5135,11 @@ static int qcom_qmp_phy_com_exit(struct qmp_phy *qphy) > > clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); > > + if (cfg->vreg_disable_load[i]) { > + for (i = cfg->num_vregs - 1; i >= 0; --i) > + regulator_set_load(qmp->vregs[i].consumer, cfg->vreg_disable_load[i]); > + } > + > regulator_bulk_disable(cfg->num_vregs, qmp->vregs); > > mutex_unlock(&qmp->phy_mutex); > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project -- ~Vinod