Re: [PATCH 09/14] clk: qcom: gdsc: add separate sleep state collapse vote support

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On 10/17/2024 10:26 PM, Dmitry Baryshkov wrote:
Some platforms use separate collapse vote registers for the active and
sleep states. Extend gdsc_update_collapse_bit() to support separate
collapse_sleep_ctrl register.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
  drivers/clk/qcom/gdsc.c | 8 ++++++++
  drivers/clk/qcom/gdsc.h | 2 ++
  2 files changed, 10 insertions(+)

diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
index fa5fe4c2a2ee7786c2e8858f3e41301f639e5d59..95f8e90a8d25673c8a97a03f92cbdad25c3259db 100644
--- a/drivers/clk/qcom/gdsc.c
+++ b/drivers/clk/qcom/gdsc.c
@@ -133,6 +133,14 @@ static int gdsc_update_collapse_bit(struct gdsc *sc, bool val)
  	if (ret)
  		return ret;
+ if (sc->collapse_sleep_ctrl) {
+		ret = regmap_update_bits(sc->regmap, sc->collapse_sleep_ctrl, mask, val ? mask : 0);
+		if (ret) {
+			regmap_update_bits(sc->regmap, reg, mask, val ? 0 : mask);
+			return ret;
+		}
+	}
+

Dimtry, based on our discussions with design, we understand that this is a one time setting and can be done from the Global clock controller probe.
Thus, this patch can be dropped.

/* Clear GDSC_SLEEP_ENA_VOTE to stop votes being auto-removed in sleep. */
        regmap_write(regmap, 0x62204, 0x0);

  	return 0;
  }
diff --git a/drivers/clk/qcom/gdsc.h b/drivers/clk/qcom/gdsc.h
index 1e2779b823d1c8ca077c9b4cd0a0dbdf5f9457ef..dab2e31be8f65408d6d29df42ad5105830760d3e 100644
--- a/drivers/clk/qcom/gdsc.h
+++ b/drivers/clk/qcom/gdsc.h
@@ -19,6 +19,7 @@ struct reset_controller_dev;
   * @regmap: regmap for MMIO accesses
   * @gdscr: gsdc control register
   * @collapse_ctrl: APCS collapse-vote register
+ * @collapse_sleep_ctrl: APCS collapse-vote register for the sleep state
   * @collapse_mask: APCS collapse-vote mask
   * @gds_hw_ctrl: gds_hw_ctrl register
   * @cxcs: offsets of branch registers to toggle mem/periph bits in
@@ -37,6 +38,7 @@ struct gdsc {
  	struct regmap			*regmap;
  	unsigned int			gdscr;
  	unsigned int			collapse_ctrl;
+	unsigned int			collapse_sleep_ctrl;
  	unsigned int			collapse_mask;
  	unsigned int			gds_hw_ctrl;
  	unsigned int			clamp_io_ctrl;


--
Thanks & Regards,
Taniya Das.




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