This is a note to let you know that I've just added the patch titled
clk: qcom: branch: Add helper functions for setting retain bits
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
clk-qcom-branch-add-helper-functions-for-setting-ret.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9f4198044f52dd30926c75e96a6f4cf834f28c97
Author: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Date: Wed Feb 8 10:13:31 2023 +0100
clk: qcom: branch: Add helper functions for setting retain bits
[ Upstream commit b594e6f6605311785171b8d4600fe96e35625530 ]
Most Qualcomm branch clocks come with a pretty usual set of bits that
can enable memory retention by means of not turning off parts of the
memory logic. Add them to the common header file and introduce helper
functions for setting them instead of using magic writes.
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230208091340.124641-2-konrad.dybcio@xxxxxxxxxx
Stable-dep-of: f38467b5a920 ("clk: qcom: gcc-sc7280: Update force mem core bit for UFS ICE clock")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h
index 17a58119165e8..55b3a2c3afed9 100644
--- a/drivers/clk/qcom/clk-branch.h
+++ b/drivers/clk/qcom/clk-branch.h
@@ -37,6 +37,32 @@ struct clk_branch {
struct clk_regmap clkr;
};
+/* Branch clock common bits for HLOS-owned clocks */
+#define CBCR_FORCE_MEM_CORE_ON BIT(14)
+#define CBCR_FORCE_MEM_PERIPH_ON BIT(13)
+#define CBCR_FORCE_MEM_PERIPH_OFF BIT(12)
+
+static inline void qcom_branch_set_force_mem_core(struct regmap *regmap,
+ struct clk_branch clk, bool on)
+{
+ regmap_update_bits(regmap, clk.halt_reg, CBCR_FORCE_MEM_CORE_ON,
+ on ? CBCR_FORCE_MEM_CORE_ON : 0);
+}
+
+static inline void qcom_branch_set_force_periph_on(struct regmap *regmap,
+ struct clk_branch clk, bool on)
+{
+ regmap_update_bits(regmap, clk.halt_reg, CBCR_FORCE_MEM_PERIPH_ON,
+ on ? CBCR_FORCE_MEM_PERIPH_ON : 0);
+}
+
+static inline void qcom_branch_set_force_periph_off(struct regmap *regmap,
+ struct clk_branch clk, bool on)
+{
+ regmap_update_bits(regmap, clk.halt_reg, CBCR_FORCE_MEM_PERIPH_OFF,
+ on ? CBCR_FORCE_MEM_PERIPH_OFF : 0);
+}
+
extern const struct clk_ops clk_branch_ops;
extern const struct clk_ops clk_branch2_ops;
extern const struct clk_ops clk_branch_simple_ops;
