linux-kernel - [PATCH 3/4] OPP: Update the bandwidth on OPP frequency changes

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Message-Id: <20190313090010.20534-4-georgi.djakov@linaro.org>
Date:   Wed, 13 Mar 2019 11:00:09 +0200
From:   Georgi Djakov <georgi.djakov@...aro.org>
To:     vireshk@...nel.org, sboyd@...nel.org, nm@...com,
        robh+dt@...nel.org, mark.rutland@....com, rjw@...ysocki.net
Cc:     jcrouse@...eaurora.org, vincent.guittot@...aro.org,
        bjorn.andersson@...aro.org, amit.kucheria@...aro.org,
        seansw@....qualcomm.com, daidavid1@...eaurora.org,
        evgreen@...omium.org, sibis@...eaurora.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        georgi.djakov@...aro.org
Subject: [PATCH 3/4] OPP: Update the bandwidth on OPP frequency changes

If the OPP bandwidth values are populated, we want to switch also the
interconnect bandwidth in addition to frequency and voltage.

Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
---
 drivers/opp/core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 4b019cecaa07..99e7c4cf6c34 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -781,6 +781,10 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
 		ret = _generic_set_opp_clk_only(dev, clk, old_freq, freq);
 	}
 
+	if (!ret && !IS_ERR_OR_NULL(opp_table->path) && opp->bandwidth)
+		icc_set_bw(opp_table->path, opp->bandwidth->avg,
+			   opp->bandwidth->peak);
+
 	/* Scaling down? Configure required OPPs after frequency */
 	if (!ret && freq < old_freq) {
 		ret = _set_required_opps(dev, opp_table, opp);