MMC controller lacks a clock scaling mechanism, unlike the UFS
controller. By default, the MMC controller is set to TURBO mode
during probe, but the ICE clock remains at XO frequency,
leading to read/write performance degradation on eMMC.

To address this, set the ICE clock to TURBO during probe to
align it with the controller clock. This ensures consistent
performance and avoids mismatches between the controller
and ICE clock frequencies.

For platforms where ICE is represented as a separate device,
use the OPP framework to vote for TURBO mode, maintaining
proper voltage and power domain constraints.

Signed-off-by: Abhinaba Rakshit <abhinaba.rakshit@oss.qualcomm.com>
---
 drivers/soc/qcom/ice.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/soc/qcom/ice.c b/drivers/soc/qcom/ice.c
index 0bdc64db414a7028653c0f3327988b1554788fcf..3b69b5673ea93fa927e62a7f4b5ae52878d564c8 100644
--- a/drivers/soc/qcom/ice.c
+++ b/drivers/soc/qcom/ice.c
@@ -707,6 +707,11 @@ static struct qcom_ice *qcom_ice_create(struct device *dev,
 			engine->max_freq = rate;
 			dev_pm_opp_put(opp);
 		}
+
+		/* Vote for maximum clock rate for maximum performance */
+		err = dev_pm_opp_set_rate(dev, INT_MAX);
+		if (err)
+			dev_warn(dev, "Failed boosting the ICE clk to TURBO\n");
 	}
 
 	engine->core_clk_freq = clk_get_rate(engine->core_clk);

-- 
2.34.1