arm64: dts: exynos: add mmc aliases

Add aliases for eMMC and SD card where applicable, so that
assigned mmc indeces are always the same.

Signed-off-by: Henrik Grimler <henrik@grimler.se>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20230315212814.15908-3-henrik@grimler.se
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: drop mshc aliases

Previously, the mshc0 alias has been necessary so that
MMC_CAP_1_8V_DDR | MMC_CAP_8_BIT_DATA are set for mshc_0/mmc_0.
However, these capabilities should be described in the device tree so
that we do not have to rely on the alias.

The property mmc-ddr-1_8v replaces MMC_CAP_1_8V_DDR, while bus_width =
<8>, which is already set for all the mshc0/mmc0 nodes, replaces
MMC_CAP_8_BIT_DATA.

Also drop other mshc aliases as they are not needed.

Signed-off-by: Henrik Grimler <henrik@grimler.se>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20230315212814.15908-2-henrik@grimler.se
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: use lowercase hex addresses

By convention the hex addresses should be lowercase.

Link: https://lore.kernel.org/r/20230125094513.155063-9-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: add ADC supply on Exynos7 Espresso

ADC requires supply and it seems LDO3 (same as on Exynos5433 TM2 boards)
fits in voltage range of 1.8 V. Use it to silence warning:

exynos7-espresso.dtb: adc@13620000: 'vdd-supply' is a required property

Link: https://lore.kernel.org/r/20230120173116.341270-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>

arm64: dts: exynos: disable non-working GPU on Exynos7 Espresso

The Panfrost GPU drivers require clock but such was not provided in
Exynos7 DTSI. The CMU_G3D clock controller was not upstreamed, thus
consider GPU as non-working and simply disable it to silence warnings
like:

exynos7-espresso.dtb: gpu@14ac0000: 'clocks' is a required property

Link: https://lore.kernel.org/r/20230120173116.341270-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>

arm64: dts: exynos: drop unsupported I2C properties in Espresso

The Samsung HSI2C (High Speed I2C) bindings do not allow
samsung,i2c-sda-delay (present in older S3C24xx I2C bindings):

exynos7-espresso.dtb: i2c@13660000: Unevaluated properties are not allowed ('samsung,i2c-sda-delay', 'samsung,i2c-max-bus-freq' were unexpected)

Link: https://lore.kernel.org/r/20221204190543.143986-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: use local header for pinctrl register values

The DTS uses hardware register values directly in pin controller pin
configuration. These are not some IDs or other abstraction layer but
raw numbers used in the registers.

These numbers were previously put in the bindings header to avoid code
duplication and to provide some context meaning (name), but they do not
fit the purpose of bindings.

Store the constants in a header next to DTS and use them instead of
bindings.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
Tested-by: Chanho Park <chanho61.park@samsung.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220605160508.134075-6-krzysztof.kozlowski@linaro.org

arm64: dts: exynos: add USB DWC3 supplies to Espresso board

Add required voltage regulators for USB DWC3 block on Exynos7 Espresso
board. Due to lack of schematics of Espresso board, the choice of
regulators is approximate. What bindings call VDD10, for Exynos7 should
be actually called VDD09 (0.9 V). Use regulators with a matching
voltage range based on vendor sources for Meizu Pro 5 M576 handset (also
with Exynos7420).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220123111644.25540-2-krzysztof.kozlowski@canonical.com

arm64: dts: exynos: align pinctrl with dtschema in Exynos7

Align the pin controller related nodes with dtschema. No functional
change expected.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20220111201722.327219-12-krzysztof.kozlowski@canonical.com

arm64: dts: exynos: correct PMIC interrupt trigger level on Espresso

The Samsung PMIC datasheets describe the interrupt line as active low
with a requirement of acknowledge from the CPU. Without specifying the
interrupt type in Devicetree, kernel might apply some fixed
configuration, not necessarily working for this hardware.

Fixes: 9589f7721e16 ("arm64: dts: Add S2MPS15 PMIC node on exynos7-espresso")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201210212903.216728-8-krzk@kernel.org

arm64: dts: exynos: adjust node names to DT spec in Exynos7 Espresso

The Devicetree specification expects device node names to have a generic
name, representing the class of a device. Also the convention for node
names is to use hyphens, not underscores.

No functional changes.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201027170947.132725-12-krzk@kernel.org

arm64: dts: exynos: Keep LDO12 always-on on Espresso

LDO12 on Exynos7 Espresso board supplies power to VDDQ_UFS20_RESET, in
case this regulator is OFF, UFS host controller can not send command to
UFS device. To keep this supply ON, set regulator-always-on property for
this LDO.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arm64: dts: exynos: Fix silent hang after boot on Espresso

Once regulators are disabled after kernel boot, on Espresso board silent
hang observed because of LDO7 being disabled. LDO7 actually provide
power to CPU cores and non-cpu blocks circuitries. Keep this regulator
always-on to fix this hang.

Fixes: 9589f7721e16 ("arm64: dts: Add S2MPS15 PMIC node on exynos7-espresso")
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arm64: dts: exynos: Add UFS node to Exynos7

Add UFS and UFS-PHY device nods to Exynos7 SoC and Espresso board.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Tested-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arm64: dts: exynos: Rename Samsung and Exynos to lowercase

Fix up inconsistent usage of upper and lowercase letters in "Samsung"
and "Exynos" names.

"SAMSUNG" and "EXYNOS" are not abbreviations but regular trademarked
names. Therefore they should be written with lowercase letters starting
with capital letter.

The lowercase "Exynos" name is promoted by its manufacturer Samsung
Electronics Co., Ltd., in advertisement materials and on website.

Although advertisement materials usually use uppercase "SAMSUNG", the
lowercase version is used in all legal aspects (e.g. on Wikipedia and in
privacy/legal statements on
https://www.samsung.com/semiconductor/privacy-global/).

Link: https://lore.kernel.org/r/20200117190305.5257-1-krzk@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

arm64: dts: exynos: Add GPU/Mali T760 node to Exynos7

Add nodes for GPU (Mali T760) to Exynos7. Current support for Exynos7
misses a lot, including proper clocks, power domains, frequency and
voltage scaling and cooling. However this still can provide basic GPU
description. Not tested on HW.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arm64: dts: replace 'linux,stdout-path' with 'stdout-path'

'linux,stdout-path' has been deprecated for some time in favor of
'stdout-path'. Now dtc will warn on occurrences of 'linux,stdout-path'.
Search and replace the one occurrence with 'stdout-path'.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arm64: dts: exynos: Add SPDX license identifiers

Replace GPL v2.0 license statements with SPDX license identifiers.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arm64: dts: exynos: Remove num-slots from exynos platforms

dwmmc driver deprecated num-slots and plan to get rid
of it finally. Just move a step to cleanup it from DT.

Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arm64: dts: exynos: Add regulators for Vbus and Vbus-Boost

Adding fixed voltage regulators for Vbus and Vbus-boost required
by USB 3.0 DRD controller on Exynos7-espresso board.

Signed-off-by: Vivek Gautam <gautamvivek1987@gmail.com>
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arm64: dts: exynos: Use macros for pinctrl configuration on Exynos7

Usage of DTS macros instead of hard-coded numbers makes code easier to
read. One does not have to remember which value means pull-up/down or
specific driver strength.

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arm64: dts: Fix RTC by providing rtc_src clock

Add RTC source clock as Exynos7 needs source (32.768KHz) clock
for RTC block. Without this currently S3C RTC driver probe is broken
on this SoC.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arm64: dts: exynos: Modify the voltage range for BUCK2 for exynos7

Change the BUCK2 (vdd_atlas) voltage range to '500 - 1200mv' since
CPU DVFS requires it.

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

arm64: dts: Enable HS200 mode operation on exynos7-espresso

This patch enables HS200 mode operation on Exynos7 based
Espresso board.
This also removes _broken-cd_ property as per mmc binding documentation
which says one of the properties between broken-cd and non-removable
should be used. And we already use _non-removable_ as emmc is mounted
on the board which is a non-removable device.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

arm64: dts: Add S2MPS15 PMIC node on exynos7-espresso

This patch adds PMIC (S2MPS15) node on Espresso board,
which includes regulators and pmic-clk sub-nodes.

This patch also adds {vmmc,vqmmc}-supply properties for mmc2 node.

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

arm64: dts: Add nodes for mmc, i2c, rtc, watchdog, adc on exynos7

Add nodes for 3 mmc channels, 12 i2c channels, rtc, watchdog and
adc on exynos7 SoC.

Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>

arm64: dts: Add initial device tree support for exynos7

Add initial device tree nodes for exynos7 SoC and board dts file
to support espresso board based on exynos7 SoC.

Signed-off-by: Naveen Krishna Ch <naveenkrishna.ch@gmail.com>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Reviewed-by: Thomas Abraham <thomas.ab@samsung.com>
Tested-by: Thomas Abraham <thomas.ab@samsung.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>