From patchwork Fri Mar 5 13:17:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aisheng Dong X-Patchwork-Id: 394691 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E16FC4332D for ; Fri, 5 Mar 2021 13:31:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4840264FDF for ; Fri, 5 Mar 2021 13:31:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230420AbhCENb1 (ORCPT ); Fri, 5 Mar 2021 08:31:27 -0500 Received: from inva021.nxp.com ([92.121.34.21]:58664 "EHLO inva021.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230435AbhCENbE (ORCPT ); Fri, 5 Mar 2021 08:31:04 -0500 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 29F3820148D; Fri, 5 Mar 2021 14:31:03 +0100 (CET) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 5BA2520149F; Fri, 5 Mar 2021 14:30:58 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 29CA44031C; Fri, 5 Mar 2021 14:30:52 +0100 (CET) From: Dong Aisheng To: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Cc: dongas86@gmail.com, kernel@pengutronix.de, shawnguo@kernel.org, robh+dt@kernel.org, linux-imx@nxp.com, jan.kiszka@siemens.com, Dong Aisheng Subject: [PATCH v5 18/18] firmware: imx: scu-pd: do not power off console domain Date: Fri, 5 Mar 2021 21:17:48 +0800 Message-Id: <1614950268-22073-20-git-send-email-aisheng.dong@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1614950268-22073-1-git-send-email-aisheng.dong@nxp.com> References: <1614950268-22073-1-git-send-email-aisheng.dong@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Do not power off console domain in runtime pm. Signed-off-by: Dong Aisheng --- ChangeLog: * original patch was sent here: https://patchwork.kernel.org/project/linux-arm-kernel/patch/1573995924-14752-1-git-send-email-aisheng.dong@nxp.com/ * move to this patch series as it's required for imx8qm booting --- drivers/firmware/imx/scu-pd.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/imx/scu-pd.c b/drivers/firmware/imx/scu-pd.c index 08533ee67626..338800d16c65 100644 --- a/drivers/firmware/imx/scu-pd.c +++ b/drivers/firmware/imx/scu-pd.c @@ -86,6 +86,8 @@ struct imx_sc_pd_soc { u8 num_ranges; }; +static int imx_con_rsrc; + static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = { /* LSIO SS */ { "pwm", IMX_SC_R_PWM_0, 8, true, 0 }, @@ -207,6 +209,23 @@ to_imx_sc_pd(struct generic_pm_domain *genpd) return container_of(genpd, struct imx_sc_pm_domain, pd); } +static void imx_sc_pd_get_console_rsrc(void) +{ + struct of_phandle_args specs; + int ret; + + if (!of_stdout) + return; + + ret = of_parse_phandle_with_args(of_stdout, "power-domains", + "#power-domain-cells", + 0, &specs); + if (ret) + return; + + imx_con_rsrc = specs.args[0]; +} + static int imx_sc_pd_power(struct generic_pm_domain *domain, bool power_on) { struct imx_sc_msg_req_set_resource_power_mode msg; @@ -267,6 +286,7 @@ imx_scu_add_pm_domain(struct device *dev, int idx, const struct imx_sc_pd_range *pd_ranges) { struct imx_sc_pm_domain *sc_pd; + bool is_off = true; int ret; if (!imx_sc_rm_is_resource_owned(pm_ipc_handle, pd_ranges->rsrc + idx)) @@ -288,6 +308,10 @@ imx_scu_add_pm_domain(struct device *dev, int idx, "%s", pd_ranges->name); sc_pd->pd.name = sc_pd->name; + if (imx_con_rsrc == sc_pd->rsrc) { + sc_pd->pd.flags = GENPD_FLAG_RPM_ALWAYS_ON; + is_off = false; + } if (sc_pd->rsrc >= IMX_SC_R_LAST) { dev_warn(dev, "invalid pd %s rsrc id %d found", @@ -297,7 +321,7 @@ imx_scu_add_pm_domain(struct device *dev, int idx, return NULL; } - ret = pm_genpd_init(&sc_pd->pd, NULL, true); + ret = pm_genpd_init(&sc_pd->pd, NULL, is_off); if (ret) { dev_warn(dev, "failed to init pd %s rsrc id %d", sc_pd->name, sc_pd->rsrc); @@ -363,6 +387,8 @@ static int imx_sc_pd_probe(struct platform_device *pdev) if (!pd_soc) return -ENODEV; + imx_sc_pd_get_console_rsrc(); + return imx_scu_init_pm_domains(&pdev->dev, pd_soc); }