linux-kernel - [RFC v5 0/2] Add SDHC interconnect bandwidth scaling

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Message-Id: <1583992911-12001-1-git-send-email-ppvk@codeaurora.org>
Date:   Thu, 12 Mar 2020 11:31:49 +0530
From:   Pradeep P V K <ppvk@...eaurora.org>
To:     bjorn.andersson@...aro.org, adrian.hunter@...el.com,
        robh+dt@...nel.org, ulf.hansson@...aro.org,
        asutoshd@...eaurora.org, stummala@...eaurora.org,
        sayalil@...eaurora.org, rampraka@...eaurora.org,
        vbadigan@...eaurora.org, sboyd@...nel.org,
        georgi.djakov@...aro.org, mka@...omium.org
Cc:     linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        agross@...nel.org, linux-mmc-owner@...r.kernel.org,
        Pradeep P V K <ppvk@...eaurora.org>
Subject: [RFC v5 0/2] Add SDHC interconnect bandwidth scaling

Add interconnect bandwidths for SDHC driver using OPP framework that
is required by SDHC driver based on the clock frequency and bus width
of the card. Otherwise, the system clocks may run at minimum clock
speed and thus affecting the performance.

This change is based on
[RFC] mmc: host: sdhci-msm: Use the interconnect API
(https://lkml.org/lkml/2018/10/11/499) and

[PATCH v6] Introduce Bandwidth OPPs for interconnects
(https://lkml.org/lkml/2019/12/6/740)

Pradeep P V K (2):
  mmc: sdhci-msm: Add interconnect bus bandwidth scaling support
  dt-bindings: mmc: sdhci-msm: Add interconnect BW scaling strings

 .../devicetree/bindings/mmc/sdhci-msm.txt          |  18 ++
 drivers/mmc/host/sdhci-msm.c                       | 231 ++++++++++++++++++++-
 2 files changed, 245 insertions(+), 4 deletions(-)

-- 
RFC v4 -> v5:
- Added Rob's Acked-by and Bjorn Reviewed-by for the DT patch.
- Rewrote the icc interconnect get handlers and its error handling
  and allocated vote data after handling all icc get handler errors.
- Removed explicit error check on ICC handlers.
- Addressed minor code style comments.
1.9.1