[PATCH v3 00/38] Tegra SDHCI add support for HS200 and UHS signaling

Aapo Vienamo
2018-08-30T15:06:01Z

Hi all,

This series implements support for faster signaling modes on Tegra
SDHCI controllers. This series consist of several parts: changes
required for 1.8 V signaling and pad control, pad calibration, and
tuning. Following earlies patch sets have been merged into this
larger set: "Tegra PMC pinctrl pad configuration", "Tegra SDHCI enable
1.8 V signaling on Tegar210 and Tegra186", "Tegra SDHCI update the
padautocal procedure". Also the patches for enabling SDHCI tuning
are added.

Changelog:
v3:
- Remove tegra_sdhci_writew() from tegra210_sdhci_ops to prevent
incorrect access to SDHCI_TRANSFER_MODE on Tegra210.
- Drop "mmc: sdhci: Add a quirk to skip clearing the transfer
mode register on tuning". This is no longer needed since it
was effectively a workaround to the behavior caused by
tegra_sdhci_writew() on Tegra210.
- Implement disabling of the card clock during issuing of the
tuning command in tegra210_sdhci_writew().
- Drop "mmc: sdhci: Add a quirk to disable card clock during
tuning". This is now implemented in the sdhci-tegra driver.

v2:
- Fix grammar in PMC device tree bindings docs
- Remove a stray line from tegra sdhci bindings
- Cosmetic changes to PMC pinctrl driver
- Fix a typo in "soc/tegra: pmc: Implement
tegra_io_pad_is_powered()" commit message
- Declare mask and value on the same line in
tegra_io_pad_is_powered()
- Move the call to tegra_sdhci_is_pad_and_regulator_valid() to
inside the if condition in tegra_sdhci_reset()
- Use usleep_range() in tegra_sdhci_configure_cal_pad()
- Move sdhci_writel() out of the enable if-else body in
tegra_sdhci_configure_cal_pad()
- Add a delay before starting polling in
tegra_sdhci_pad_autocalib()
- Use usleep_range() in tegra_sdhci_set_tap()
- Rename orig_enabled to status in
tegra_sdhci_configure_card_clk()
- Fix if condition wrapping alignment in tegra_sdhci_set_tap()

v1:
- Probe the regulator voltage capabilities to determine whether pinctrl
is needed in tegra_sdhci_r eset
- Don't remove tegra_sdhci_voltage_switch()
- Use dev_warn() in tegra_sdhci_init_pinctrl_info()
- Don't change start_signal_voltage_switch callback if pinctrl info
invalid
- Only call udelay(1) on enable in tegra_sdhci_configure_cal_pad()
- Add nvidia, prefix to pad autocal offset dt props in the example

See the original patch sets for earlier changelogs.

Aapo Vienamo (38):
dt-bindings: Add Tegra PMC pad configuration bindings
dt-bindings: mmc: tegra: Add pad voltage control properties
dt-bindings: Add Tegra SDHCI pad pdpu offset bindings
dt-bindings: mmc: Add Tegra SDHCI sampling trimmer values
soc/tegra: pmc: Fix pad voltage configuration for Tegra186
soc/tegra: pmc: Factor out DPD register bit calculation
soc/tegra: pmc: Implement tegra_io_pad_is_powered()
soc/tegra: pmc: Use X macro to generate IO pad tables
soc/tegra: pmc: Remove public pad voltage APIs
soc/tegra: pmc: Implement pad configuration via pinctrl
mmc: tegra: Reconfigure pad voltages during voltage switching
mmc: tegra: Poll for calibration completion
mmc: tegra: Set calibration pad voltage reference
mmc: tegra: Power on the calibration pad
mmc: tegra: Disable card clock during pad calibration
mmc: tegra: Program pad autocal offsets from dt
mmc: tegra: Perform pad calibration after voltage switch
mmc: tegra: Enable pad calibration on Tegra210 and Tegra186
mmc: tegra: Add a workaround for tap value change glitch
mmc: tegra: Parse default trim and tap from dt
mmc: tegra: Configure default tap values
mmc: tegra: Configure default trim value on reset
mmc: tegra: Use standard SDHCI tuning on Tegra210 and Tegra186
mmc: tegra: Remove tegra_sdhci_writew() from tegra210_sdhci_ops
mmc: tegra: Disable card clock during tuning cmd on Tegra210
mmc: tegra: Enable UHS and HS200 modes for Tegra210
mmc: tegra: Enable UHS and HS200 modes for Tegra186
arm64: dts: Add Tegra210 sdmmc pinctrl voltage states
arm64: dts: Add Tegra186 sdmmc pinctrl voltage states
arm64: dts: tegra210-p2180: Allow ldo2 to go down to 1.8 V
arm64: dts: tegra210-p2180: Correct sdmmc4 vqmmc-supply
arm64: dts: tegra210-p2597: Remove no-1-8-v from sdmmc1
arm64: dts: tegra186: Add sdmmc pad auto calibration offsets
arm64: dts: tegra210: Add sdmmc pad auto calibration offsets
arm64: dts: tegra210: Add SDHCI tap and trim values
arm64: dts: tegra186: Add SDHCI tap and trim values
arm64: dts: tegra186: Assign clocks for sdmmc1 and sdmmc4
arm64: dts: tegra210: Assign clocks for sdmmc1 and sdmmc4

.../arm/tegra/nvidia,tegra186-pmc.txt | 93 +++
.../bindings/arm/tegra/nvidia,tegra20-pmc.txt | 103 ++++
.../bindings/mmc/nvidia,tegra20-sdhci.txt | 68 ++
arch/arm64/boot/dts/nvidia/tegra186.dtsi | 74 +++
.../arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 12 +-
.../arm64/boot/dts/nvidia/tegra210-p2597.dtsi | 1 -
arch/arm64/boot/dts/nvidia/tegra210.dtsi | 55 ++
drivers/mmc/host/sdhci-tegra.c | 583 ++++++++++++++++--
drivers/soc/tegra/pmc.c | 511 +++++++++++----
.../pinctrl/pinctrl-tegra-io-pad.h | 18 +
include/soc/tegra/pmc.h | 20 +-
11 files changed, 1328 insertions(+), 210 deletions(-)
create mode 100644 include/dt-bindings/pinctrl/pinctrl-tegra-io-pad.h

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2.18.0