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 | 204 ++++++++++++++++++++- 2 files changed, 218 insertions(+), 4 deletions(-) -- changes from RFC v3 -> v4: - Addressed review comments from Bjorn and Matthias 1.9.1
