[PATCH v6 04/27] clk: mediatek: clk-mtk: Introduce mtk_clk_get_hwv_regmap()
From: Laura Nao <hidden>
Date: 2025-09-15 15:21:30
Also in:
linux-arm-kernel, linux-clk, linux-devicetree, linux-mediatek, lkml
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
On MT8196, some clock controllers use a separate regmap for hardware voting via set/clear/status registers. Add mtk_clk_get_hwv_regmap() to retrieve this optional regmap, avoiding duplicated lookup code in mtk_clk_register_muxes() and mtk_clk_register_gate(). Reviewed-by: Nícolas F. R. A. Prado <redacted> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Chen-Yu Tsai <wenst@chromium.org> Signed-off-by: Laura Nao <redacted> --- drivers/clk/mediatek/clk-mtk.c | 16 ++++++++++++++++ drivers/clk/mediatek/clk-mtk.h | 1 + 2 files changed, 17 insertions(+)
diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
index ba1d1c495bc2..19cd27941747 100644
--- a/drivers/clk/mediatek/clk-mtk.c
+++ b/drivers/clk/mediatek/clk-mtk.c@@ -685,4 +685,20 @@ void mtk_clk_simple_remove(struct platform_device *pdev) } EXPORT_SYMBOL_GPL(mtk_clk_simple_remove); +struct regmap *mtk_clk_get_hwv_regmap(struct device_node *node) +{ + struct device_node *hwv_node; + struct regmap *regmap_hwv; + + hwv_node = of_parse_phandle(node, "mediatek,hardware-voter", 0); + if (!hwv_node) + return NULL; + + regmap_hwv = device_node_to_regmap(hwv_node); + of_node_put(hwv_node); + + return regmap_hwv; +} +EXPORT_SYMBOL_GPL(mtk_clk_get_hwv_regmap); + MODULE_LICENSE("GPL");
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index c17fe1c2d732..11962fac43ea 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h@@ -245,5 +245,6 @@ int mtk_clk_pdev_probe(struct platform_device *pdev); void mtk_clk_pdev_remove(struct platform_device *pdev); int mtk_clk_simple_probe(struct platform_device *pdev); void mtk_clk_simple_remove(struct platform_device *pdev); +struct regmap *mtk_clk_get_hwv_regmap(struct device_node *node); #endif /* __DRV_CLK_MTK_H */
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2.39.5