linux-kernel - [PATCH v1 0/9] mmc: sdhci-of-arasan: Add UHS-1 support for Keem Bay SOC

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Date:   Thu, 14 Jan 2021 23:26:51 +0800
From:   Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
To:     ulf.hansson@...aro.org, broonie@...nel.org, lgirdwood@...il.com,
        robh+dt@...nel.org, devicetree@...r.kernel.org,
        adrian.hunter@...el.com, michal.simek@...inx.com,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     andriy.shevchenko@...el.com, Rashmi.A@...el.com,
        mahesh.r.vaidya@...el.com, muhammad.husaini.zulkifli@...el.com
Subject: [PATCH v1 0/9] mmc: sdhci-of-arasan: Add UHS-1 support for Keem Bay SOC

Hi,

This patch series adds Ultra High Speed(UHS-1) Bus Speed Mode Support for Keem Bay SoC SD Card.
Summary of each patches as per below:

Patch 1: Use of_device_get_match_data() helper to get the match-data.
Patch 2: Convert to use np pointer instead of using pdev->dev.of_node.
Patch 3: Add struct device *dev in probe func(), so that dev pointer can be widely use in probe to make code more readable.
Patch 4: Change from dev_err to dev_err_probe() to avoid spamming logs when probe is deferred.
Patch 5: Export function to be use by device driver to configure i/o voltage rail output which communicate with Trusted Firmware.
Patch 6: Update phy and regulator supply for Keem Bay SoC.
Patch 7: Add DT Binding for Keem Bay SoC SD Regulator.
Patch 8: Add SD Regulator driver to support Keem Bay SoC. This is to model using standard regulator abstraction during voltage operation
as for Keem Bay SoC, i/o voltage rail need to be configure by setting specific bit in the AON_CFG1 Register.
AON_CFG1 Register is a secure register. Direct access to AON_CFG1 register will cause firewall violation in secure system.
Patch 9: Add Ultra High Speed (UHS-1) Support for Keem Bay SOC. For Keem Bay hardware, two regulators are been used to change the I/O bus line voltage which are "vqmmc-supply" and "sdvrail-supply".

All of these patches was tested with Keem Bay evaluation module board.

Kindly help to review this patch set.

Muhammad Husaini Zulkifli (9):
  mmc: sdhci-of-arasan: use of_device_get_match_data()
  mmc: sdhci-of-arasan: Convert to use np instead of pdev->dev.of_node
  mmc: sdhci-of-arasan: Add structure device pointer in probe function
  mmc: sdhci-of-arasan: Use dev_err_probe() to avoid spamming logs
  firmware: keembay: Add support for Trusted Firmware Service call
  dt-bindings: mmc: Update phy and regulator supply for Keem Bay SOC
  dt-bindings: regulator: keembay: Add DT binding documentation
  regulator: keembay: Add regulator for Keem Bay SoC
  mmc: sdhci-of-arasan: Add UHS-1 support for Keem Bay SOC

 .../devicetree/bindings/mmc/arasan,sdhci.yaml |   7 +-
 .../bindings/regulator/keembay-regulator.yaml |  36 ++
 drivers/mmc/host/sdhci-of-arasan.c            | 313 ++++++++++++++++--
 drivers/regulator/Kconfig                     |  10 +
 drivers/regulator/Makefile                    |   1 +
 drivers/regulator/keembay-sd-regulator.c      | 112 +++++++
 include/linux/firmware/intel/keembay.h        |  82 +++++
 7 files changed, 532 insertions(+), 29 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/regulator/keembay-regulator.yaml
 create mode 100644 drivers/regulator/keembay-sd-regulator.c
 create mode 100644 include/linux/firmware/intel/keembay.h

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2.17.1