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Subject[PATCH 1/3] clk: qcom: alpha: Add support for programming the PLL_FSM_LEGACY_MODE bit
Date
This is used on at least SM6375 and its variations.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
---
drivers/clk/qcom/clk-alpha-pll.c | 5 +++++
drivers/clk/qcom/clk-alpha-pll.h | 5 +++--
2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index b42684703fbb..ea157723906a 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -27,6 +27,7 @@
# define PLL_VOTE_FSM_RESET BIT(21)
# define PLL_UPDATE BIT(22)
# define PLL_UPDATE_BYPASS BIT(23)
+# define PLL_FSM_LEGACY_MODE BIT(24)
# define PLL_OFFLINE_ACK BIT(28)
# define ALPHA_PLL_ACK_LATCH BIT(29)
# define PLL_ACTIVE_FLAG BIT(30)
@@ -1102,6 +1103,10 @@ void clk_fabia_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
regmap_update_bits(regmap, PLL_USER_CTL(pll), mask, val);
}

+ if (pll->flags & SUPPORTS_FSM_LEGACY_MODE)
+ regmap_update_bits(regmap, PLL_MODE(pll), PLL_FSM_LEGACY_MODE,
+ PLL_FSM_LEGACY_MODE);
+
regmap_update_bits(regmap, PLL_MODE(pll), PLL_UPDATE_BYPASS,
PLL_UPDATE_BYPASS);

diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
index 447efb82fe59..b15a62cb8e36 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -70,9 +70,10 @@ struct clk_alpha_pll {

const struct pll_vco *vco_table;
size_t num_vco;
-#define SUPPORTS_OFFLINE_REQ BIT(0)
-#define SUPPORTS_FSM_MODE BIT(2)
+#define SUPPORTS_OFFLINE_REQ BIT(0)
+#define SUPPORTS_FSM_MODE BIT(2)
#define SUPPORTS_DYNAMIC_UPDATE BIT(3)
+#define SUPPORTS_FSM_LEGACY_MODE BIT(4)
u8 flags;

struct clk_regmap clkr;
--
2.37.0
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