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[83.9.31.109]) by smtp.gmail.com with ESMTPSA id if10-20020a170906df4a00b00738795e7d9bsm1742913ejc.2.2023.01.24.19.27.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Jan 2023 19:27:32 -0800 (PST) From: Konrad Dybcio To: linux-arm-msm@vger.kernel.org, andersson@kernel.org, agross@kernel.org, krzysztof.kozlowski@linaro.org Cc: marijn.suijten@somainline.org, Konrad Dybcio , linux-kernel@vger.kernel.org Subject: [PATCH 1/7] soc: qcom: rpmpd: Add parent PD support Date: Wed, 25 Jan 2023 04:27:22 +0100 Message-Id: <20230125032728.611640-2-konrad.dybcio@linaro.org> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230125032728.611640-1-konrad.dybcio@linaro.org> References: <20230125032728.611640-1-konrad.dybcio@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1755963508545192950?= X-GMAIL-MSGID: =?utf-8?q?1755963508545192950?= In some cases (like with the GPU core clock on GMU-less SoCs) it's required that we scale more than one voltage domain. This can be achieved by linking them in a parent-child relationship. Add support for specifying a parent PD, similarly to what has been done in the RPMhPD driver. Signed-off-by: Konrad Dybcio --- drivers/soc/qcom/rpmpd.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/soc/qcom/rpmpd.c b/drivers/soc/qcom/rpmpd.c index 337b1ad1cd3b..0c2d930ab38f 100644 --- a/drivers/soc/qcom/rpmpd.c +++ b/drivers/soc/qcom/rpmpd.c @@ -99,6 +99,7 @@ struct rpmpd_req { struct rpmpd { struct generic_pm_domain pd; + struct generic_pm_domain *parent; struct rpmpd *peer; const bool active_only; unsigned int corner; @@ -673,6 +674,15 @@ static int rpmpd_probe(struct platform_device *pdev) data->domains[i] = &rpmpds[i]->pd; } + /* Add subdomains */ + for (i = 0; i < num; i++) { + if (!rpmpds[i]) + continue; + + if (rpmpds[i]->parent) + pm_genpd_add_subdomain(rpmpds[i]->parent, &rpmpds[i]->pd); + } + return of_genpd_add_provider_onecell(pdev->dev.of_node, data); }