From: Pradeep P V K <ppvk@codeaurora.org>
To: bjorn.andersson@linaro.org, adrian.hunter@intel.com,
robh+dt@kernel.org, ulf.hansson@linaro.org,
vbadigan@codeaurora.org, sboyd@kernel.org,
georgi.djakov@linaro.org, mka@chromium.org
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-mmc-owner@vger.kernel.org, rnayak@codeaurora.org,
sibis@codeaurora.org, matthias@chromium.org,
Pradeep P V K <ppvk@codeaurora.org>
Subject: =?y?q?=5BPATCH=C2=A0V3=201/2=5D=20mmc=3A=20sdhci-msm=3A=20Add=20interconnect=20bandwidth=20scaling=20support?=
Date: Fri, 5 Jun 2020 15:00:26 +0530 [thread overview]
Message-ID: <1591349427-27004-2-git-send-email-ppvk@codeaurora.org> (raw)
In-Reply-To: <1591349427-27004-1-git-send-email-ppvk@codeaurora.org>
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Interconnect bandwidth scaling support is now added as a
part of OPP [1]. So, make sure interconnect driver is ready
before handling interconnect scaling.
This change is based on
[1] [Patch v8] Introduce OPP bandwidth bindings
(https://lkml.org/lkml/2020/5/12/493)
[2] [Patch v3] mmc: sdhci-msm: Fix error handling
for dev_pm_opp_of_add_table()
(https://lkml.org/lkml/2020/5/5/491)
Signed-off-by: Pradeep P V K <ppvk@codeaurora.org>
---
drivers/mmc/host/sdhci-msm.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index b277dd7..a945e84 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -14,6 +14,7 @@
#include <linux/slab.h>
#include <linux/iopoll.h>
#include <linux/regulator/consumer.h>
+#include <linux/interconnect.h>
#include "sdhci-pltfm.h"
#include "cqhci.h"
@@ -2070,6 +2071,13 @@ static int sdhci_msm_probe(struct platform_device *pdev)
}
msm_host->bulk_clks[0].clk = clk;
+ /* Make sure that ICC driver is ready for interconnect bandwdith
+ * scaling before registering the device for OPP.
+ */
+ ret = dev_pm_opp_of_find_icc_paths(&pdev->dev, NULL);
+ if (ret)
+ goto bus_clk_disable;
+
msm_host->opp_table = dev_pm_opp_set_clkname(&pdev->dev, "core");
if (IS_ERR(msm_host->opp_table)) {
ret = PTR_ERR(msm_host->opp_table);
--
1.9.1
next prev parent reply other threads:[~2020-06-05 9:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-04 11:14 [PATCH V2 0/2] Add SDHC interconnect bandwidth scaling Pradeep P V K
2020-06-04 11:14 ` [PATCH V2 1/2] mmc: sdhci-msm: Add interconnect bandwidth scaling support Pradeep P V K
2020-06-04 17:09 ` Matthias Kaehlcke
2020-06-04 18:34 ` Sibi Sankar
2020-06-05 8:06 ` ppvk
2020-06-04 11:14 ` [PATCH V2 2/2] dt-bindings: mmc: sdhci-msm: Add interconnect BW scaling strings Pradeep P V K
2020-06-05 9:30 ` =?y?q?=5BPATCH=C2=A0V3=200/2=5D=20Add=20SDHC=20interconnect=20bandwidth=20scaling=20?= Pradeep P V K
2020-06-05 9:30 ` Pradeep P V K [this message]
2020-06-05 11:40 ` [PATCH V3 1/2] mmc: sdhci-msm: Add interconnect bandwidth scaling support Sibi Sankar
2020-06-09 8:30 ` ppvk
2020-06-05 9:30 ` =?y?q?=5BPATCH=C2=A0V3=202/2=5D=20dt-bindings=3A=20mmc=3A=20sdhci-msm=3A=20Add=20interconnect=20BW=20scaling=20strings?= Pradeep P V K
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