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Tue, 17 Dec 2019 14:51:05 +0900 (KST) Received: from localhost.localdomain (unknown [10.113.221.102]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20191217055105epsmtip1d5f0fbcc1d04c09ba10d9876a0fb3ad2~hEqn6muP-3162031620epsmtip11; Tue, 17 Dec 2019 05:51:05 +0000 (GMT) From: Chanwoo Choi To: krzk@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, heiko@sntech.de, leonard.crestez@nxp.com, lukasz.luba@arm.com Cc: a.swigon@samsung.com, m.szyprowski@samsung.com, kgene@kernel.org, cw00.choi@samsung.com, myungjoo.ham@samsung.com, kyungmin.park@samsung.com, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org Subject: [PATCH 4/9] PM / devfreq: exynos-bus: Replace deprecated 'devfreq' property Date: Tue, 17 Dec 2019 14:57:33 +0900 Message-Id: <20191217055738.28445-5-cw00.choi@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191217055738.28445-1-cw00.choi@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA01Sa0wUZxTNN7PzwLg6Xa29YCLrtNpIgjAuq58oBIIxa/QHxqRNSAlMYLog +8rMYoomVbEo4AvRROIDSnwEF1C7Ul3IIgY2tZggWlPsa1sKLYjQjQIiUSvuMGv037nnnvu+ LGnw0DFsocMtyQ7RxtNzdNe7ViTE37FNZyf+4Tfiv2rLEH44OUzhusBdCs8MjFL46OAoiXt7 rzK4p3SMwQ3BpxT2DvZR+EHbGRpPHA4gPN4/Q+Ka3psEri/9hsHNgSCDLzy8T+Df9zbQuKw9 wKQZLE21Tcji9VTQlmvnd1u+C/kIy5EWD7Lc6KslLRPeJZlMVtH6AknMl2Sj5Mhz5hc6rCn8 5m05GTnm1YlCvLAWr+GNDtEupfAbtmTGbyy0hcfgjTtEW3GYyhQVhU9IXS87i92SscCpuFN4 yZVvc611rVREu1LssK7Mc9qThcTEVeawMLeooOfEE+T6cfFXrUPdaA9qXFSJoljgkqC+6hpT ieawBs6HoLT0OK0Z4wj8Q4OUZkwhqL9yLGywsyH/v07X+HYEYy9qIqJJBJO+G4yal+bioOPR L7SKF3JfQ12Xj1BFJPcrAf6ffqNUxwLuMzjbM0WqWXXcMhgZylJpPZcMbXV/67T+YqHx6i1S xVHcOhi+PjqbB7iXNHhuh2hNtAF+LqsiNLwAHt9uYTQcAxOh9ohmF1zqDtBacDmClo57lOYw QceF44TaBMmtgCttCRq9FFpfnkUqJrl5EHp2KDK9Hsr3GzTJx/CgPxgpGw3nDlRESlmgvPFJ ZClHEDRUH2Wq0JJT7yp8i5AHLZJcit0qKYIr6f2TedHsn8ZhH/Lf3dKJOBbxc/Xgfp5toMQd Som9EwFL8gv1PmOY0ueLJTsl2ZkjF9skpROZw5s8RsZ8mOcMf73DnSOYV5lMJpwkrDYLAv+R np2+n23grKJbKpIklyS/jSPYqJg9KPBB58Vl9Ke5f6bVOOIe5clfWJUzBzNePW1O2npv+0mi aabP+8Ot3OCgbm/Fq51QbyZG5DuxOlNJ6uh416ZzuolL0aTStNtWNzVwc/vk6YHW50Wp/+yr +DK2emTudPrn6fMvC9H/jZ3+9/vkx/6MT7r7hz3VY/uWV6aF6IbudM9w0MDrlAJRiCNlRXwD 3H3Hsr0DAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrALMWRmVeSWpSXmKPExsWy7bCSnO6pnB+xBp0aFvfntTJaXP/ynNVi /pFzrBb/H71mteh//JrZ4vz5DewWZ5vesFusuPuR1WLT42usFpd3zWGz+Nx7hNHi04P/zBYz zu9jsljY1MJusfbIXXaLpdcvMlncblzBZtG69wi7g5DHmnlrGD02repk89i8pN5j47sdTB59 W1Yxemy/No/Z4/MmuQD2KC6blNSczLLUIn27BK6Ms1M+MBackK7Y+ewkYwPjarEuRg4OCQET ib//HLsYuTiEBHYzSpz+vYWxi5ETKC4pMe3iUWaIGmGJw4eLIWo+MUpc3XCWGaSGTUBLYv+L G2wgtohAG6PEku9yIDazwHMmiX1dZiC2sECIxJ3D88HmsAioSrx8FgUS5hWwktg1/yELxCp5 idUbDoCN5BSwlni+7TUTiC0EVPNz6jPWCYx8CxgZVjFKphYU56bnFhsWGOallusVJ+YWl+al 6yXn525iBIe7luYOxstL4g8xCnAwKvHwSpR8jxViTSwrrsw9xCjBwawkwrtDASjEm5JYWZVa lB9fVJqTWnyIUZqDRUmc92nesUghgfTEktTs1NSC1CKYLBMHp1QDY/uDWZJOB+8/tFl62bqd pXfuL9mtO39faaywmSjD+SL6qkSNcaIeu+qd3SYhCWu/vMzMW6vzltP81prw7+Zvfr25rBN0 cGO60e+NQhr1HY6K206cFfnwR7Qse33FPhbdr24MXvs+Ls66JNRXHjCxq1rInMVgrthVj92q AU+Opk28/+ceR3L5LCWW4oxEQy3mouJEAMT/au1zAgAA X-CMS-MailID: 20191217055106epcas1p11f2bc81d6bb2db3fc4bc257d78c337b9 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: SVC_REQ_APPROVE CMS-TYPE: 101P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20191217055106epcas1p11f2bc81d6bb2db3fc4bc257d78c337b9 References: <20191217055738.28445-1-cw00.choi@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org In order to remove the deprecated 'devfreq' property, replace with new 'exynos,parent-bus' property in order to get the parent devfreq device in devicetree file instead of 'devfreq' property. But, to guarantee the backward-compatibility, keep the support 'devfreq' property. Signed-off-by: Chanwoo Choi --- .../bindings/devfreq/exynos-bus.txt | 16 +++++++-------- drivers/devfreq/exynos-bus.c | 20 ++++++++++++------- 2 files changed, 21 insertions(+), 15 deletions(-) diff --git a/Documentation/devicetree/bindings/devfreq/exynos-bus.txt b/Documentation/devicetree/bindings/devfreq/exynos-bus.txt index e71f752cc18f..c948cee01124 100644 --- a/Documentation/devicetree/bindings/devfreq/exynos-bus.txt +++ b/Documentation/devicetree/bindings/devfreq/exynos-bus.txt @@ -45,7 +45,7 @@ Required properties only for parent bus device: of buses. Required properties only for passive bus device: -- devfreq: the parent bus device. +- exynos,parent-bus: the parent bus device. Optional properties only for parent bus device: - exynos,saturation-ratio: the percentage value which is used to calibrate @@ -386,36 +386,36 @@ Example2 : }; &bus_rightbus { - devfreq = <&bus_leftbus>; + exynos,parent-bus = <&bus_leftbus>; status = "okay"; }; &bus_lcd0 { - devfreq = <&bus_leftbus>; + exynos,parent-bus = <&bus_leftbus>; status = "okay"; }; &bus_fsys { - devfreq = <&bus_leftbus>; + exynos,parent-bus = <&bus_leftbus>; status = "okay"; }; &bus_mcuisp { - devfreq = <&bus_leftbus>; + exynos,parent-bus = <&bus_leftbus>; status = "okay"; }; &bus_isp { - devfreq = <&bus_leftbus>; + exynos,parent-bus = <&bus_leftbus>; status = "okay"; }; &bus_peril { - devfreq = <&bus_leftbus>; + exynos,parent-bus = <&bus_leftbus>; status = "okay"; }; &bus_mfc { - devfreq = <&bus_leftbus>; + exynos,parent-bus = <&bus_leftbus>; status = "okay"; }; diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c index 7893c3b99e60..60d61b168153 100644 --- a/drivers/devfreq/exynos-bus.c +++ b/drivers/devfreq/exynos-bus.c @@ -148,11 +148,17 @@ static int exynos_bus_get_dev_status(struct device *dev, static struct devfreq *get_parent_devfreq_by_node(struct device_node *np) { - struct device_node *node = of_parse_phandle(np, "devfreq", 0); - - if (!node) - return ERR_PTR(-ENODEV); - + struct device_node *node = of_parse_phandle(np, "exynos,parent-bus", 0); + + if (!node) { + /* + * Check the deprecated 'devfreq' property + * to support backward-compatibility. + */ + node = of_parse_phandle(np, "devfreq", 0); + if (!node) + return ERR_PTR(-ENODEV); + } return devfreq_get_devfreq_by_node(node); } @@ -376,7 +382,7 @@ static int exynos_bus_profile_init_passive(struct exynos_bus *bus, /* Get the instance of parent devfreq device */ parent_devfreq = get_parent_devfreq_by_node(dev->of_node); - if (IS_ERR(parent_devfreq)) { + if (IS_ERR(parent_devfreq)) return -EPROBE_DEFER; passive_data = devm_kzalloc(dev, sizeof(*passive_data), GFP_KERNEL); @@ -423,7 +429,7 @@ static int exynos_bus_probe(struct platform_device *pdev) if (!profile) return -ENOMEM; - node = of_parse_phandle(dev->of_node, "devfreq", 0); + node = of_parse_phandle(dev->of_node, "exynos,parent-bus", 0); if (node) { of_node_put(node); passive = true; -- 2.17.1