openwrt/target/linux/mediatek/patches-6.1/248-v6.8-clk-mediatek-add-pcw_chg_bit-control-for-PLLs-of-MT7.patch

From d9bf944beaaad1890ad3fcb755c61e1c7e4c5630 Mon Sep 17 00:00:00 2001
From: Sam Shih <sam.shih@mediatek.com>
Date: Sun, 17 Dec 2023 21:50:07 +0000
Subject: [PATCH 3/4] clk: mediatek: add pcw_chg_bit control for PLLs of MT7988

Introduce pcw_chg_bit member to struct mtk_pll_data and use it instead
of the previously hardcoded PCW_CHG_MASK macro if set.
This will needed for clocks on the MT7988 SoC.

Signed-off-by: Sam Shih <sam.shih@mediatek.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/3b9c65ddb08c8bedf790aacf29871af026b6f0b7.1702849494.git.daniel@makrotopia.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---
 drivers/clk/mediatek/clk-pll.c | 5 +++--
 drivers/clk/mediatek/clk-pll.h | 1 +
 2 files changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/clk/mediatek/clk-pll.c
+++ b/drivers/clk/mediatek/clk-pll.c
@@ -23,7 +23,7 @@
 #define CON0_BASE_EN		BIT(0)
 #define CON0_PWR_ON		BIT(0)
 #define CON0_ISO_EN		BIT(1)
-#define PCW_CHG_MASK		BIT(31)
+#define PCW_CHG_BIT		31
 
 #define AUDPLL_TUNER_EN		BIT(31)
 
@@ -141,7 +141,8 @@ static void mtk_pll_set_rate_regs(struct
 			pll->data->pcw_shift);
 	val |= pcw << pll->data->pcw_shift;
 	writel(val, pll->pcw_addr);
-	chg = readl(pll->pcw_chg_addr) | PCW_CHG_MASK;
+	chg = readl(pll->pcw_chg_addr) |
+	      BIT(pll->data->pcw_chg_bit ? : PCW_CHG_BIT);
 	writel(chg, pll->pcw_chg_addr);
 	if (pll->tuner_addr)
 		writel(val + 1, pll->tuner_addr);
--- a/drivers/clk/mediatek/clk-pll.h
+++ b/drivers/clk/mediatek/clk-pll.h
@@ -46,6 +46,7 @@ struct mtk_pll_data {
 	const char *parent_name;
 	u32 en_reg;
 	u8 pll_en_bit; /* Assume 0, indicates BIT(0) by default */
+	u8 pcw_chg_bit;
 };
 
 int mtk_clk_register_plls(struct device_node *node,