[PATCH v5 01/27] clk: mediatek: clk-pll: Add set/clr regs for shared PLL enable control
From: Laura Nao <hidden>
Date: 2025-08-29 09:21:02
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, there are set/clr registers to control a shared PLL enable register. These are intended to prevent different masters from manipulating the PLLs independently. Add the corresponding en_set_reg and en_clr_reg fields to the mtk_pll_data structure. 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-pll.c | 4 ++++ drivers/clk/mediatek/clk-pll.h | 4 ++++ 2 files changed, 8 insertions(+)
diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c
index ce453e1718e5..49ca25dd5418 100644
--- a/drivers/clk/mediatek/clk-pll.c
+++ b/drivers/clk/mediatek/clk-pll.c@@ -308,6 +308,10 @@ struct clk_hw *mtk_clk_register_pll_ops(struct mtk_clk_pll *pll, pll->en_addr = base + data->en_reg; else pll->en_addr = pll->base_addr + REG_CON0; + if (data->en_set_reg) + pll->en_set_addr = base + data->en_set_reg; + if (data->en_clr_reg) + pll->en_clr_addr = base + data->en_clr_reg; pll->hw.init = &init; pll->data = data;
diff --git a/drivers/clk/mediatek/clk-pll.h b/drivers/clk/mediatek/clk-pll.h
index 285c8db958b3..c4d06bb11516 100644
--- a/drivers/clk/mediatek/clk-pll.h
+++ b/drivers/clk/mediatek/clk-pll.h@@ -47,6 +47,8 @@ struct mtk_pll_data { const struct mtk_pll_div_table *div_table; const char *parent_name; u32 en_reg; + u32 en_set_reg; + u32 en_clr_reg; u8 pll_en_bit; /* Assume 0, indicates BIT(0) by default */ u8 pcw_chg_bit; };
@@ -68,6 +70,8 @@ struct mtk_clk_pll { void __iomem *pcw_addr; void __iomem *pcw_chg_addr; void __iomem *en_addr; + void __iomem *en_set_addr; + void __iomem *en_clr_addr; const struct mtk_pll_data *data; };
--
2.39.5