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[93.34.90.129]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-3912bee262esm11867536f8f.0.2025.03.09.06.30.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Mar 2025 06:30:49 -0700 (PDT) From: Christian Marangi To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lee Jones , Christian Marangi , Vinod Koul , Kishon Vijay Abraham I , Matthias Brugger , AngeloGioacchino Del Regno , Greg Kroah-Hartman , Lorenzo Bianconi , Daniel Danzberger , Arnd Bergmann , Linus Walleij , Nikita Shubin , Guo Ren , Yangyu Chen , Ben Hutchings , Felix Fietkau , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-phy@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-usb@vger.kernel.org, upstream@airoha.com Subject: [PATCH 07/13] clk: en7523: support getting regmap from parent node for EN7581 Date: Sun, 9 Mar 2025 14:29:38 +0100 Message-ID: <20250309132959.19045-8-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250309132959.19045-1-ansuelsmth@gmail.com> References: <20250309132959.19045-1-ansuelsmth@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250309_063052_831004_D2BC2CA6 X-CRM114-Status: GOOD ( 15.02 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Add support for getting clock regmap from parent node for Airoha EN7581. This is needed to support new implementation with SCU (System Controller Unit) as an MFD and clock-controller node as a child node of it. In such implementation the register regmap is provided as a syscon from the parent node. Signed-off-by: Christian Marangi --- drivers/clk/clk-en7523.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/drivers/clk/clk-en7523.c b/drivers/clk/clk-en7523.c index 2a74bc8fed24..29cb7ccea29a 100644 --- a/drivers/clk/clk-en7523.c +++ b/drivers/clk/clk-en7523.c @@ -665,6 +665,7 @@ static int en7581_clk_hw_init(struct platform_device *pdev, const struct en_clk_soc_data *soc_data, struct clk_hw_onecell_data *clk_data) { + struct device *dev = &pdev->dev; struct regmap *map, *clk_map; void __iomem *base; @@ -672,22 +673,28 @@ static int en7581_clk_hw_init(struct platform_device *pdev, if (IS_ERR(map)) return PTR_ERR(map); - base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(base)) - return PTR_ERR(base); - - clk_map = devm_regmap_init_mmio(&pdev->dev, base, &en7523_clk_regmap_config); - if (IS_ERR(clk_map)) - return PTR_ERR(clk_map); + if (of_property_present(dev->of_node, "reg")) { + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + clk_map = devm_regmap_init_mmio(dev, base, &en7523_clk_regmap_config); + if (IS_ERR(clk_map)) + return PTR_ERR(clk_map); + } else { + clk_map = device_node_to_regmap(dev->parent->of_node); + if (IS_ERR(clk_map)) + return PTR_ERR(clk_map); + } - en75xx_register_clocks(&pdev->dev, soc_data, clk_data, map, clk_map); + en75xx_register_clocks(dev, soc_data, clk_data, map, clk_map); regmap_clear_bits(clk_map, REG_NP_SCU_SSTR, REG_PCIE_XSI0_SEL_MASK | REG_PCIE_XSI1_SEL_MASK); regmap_update_bits(clk_map, REG_NP_SCU_PCIC, REG_PCIE_CTRL, FIELD_PREP(REG_PCIE_CTRL, 3)); - return en7581_reset_register(&pdev->dev, clk_map); + return en7581_reset_register(dev, clk_map); } static int en7523_clk_probe(struct platform_device *pdev)