arm64: dts: exynosautov9: use Exynos7 fallbacks for pin wake-up controller

ExynosAutov9 pin controller capable of wake-ups is still compatible with
Exynos7, however it does not mux interrupts. Add Exynos7 compatible
fallback to annotate that compatibility and match the bindings.

Link: https://lore.kernel.org/r/20231122200407.423264-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynosautov9: add specific compatibles to several blocks

ExynosAutov9 reuses several devices from older designs, thus historically
we kept the old (block's) compatible only. This works fine and there is
no bug here, however guidelines expressed in
Documentation/devicetree/bindings/writing-bindings.rst state that:
1. Compatibles should be specific.
2. We should add new compatibles in case of bugs or features.

Add compatibles specific to ExynosAutov9 in front of all old-SoC-like
compatibles. This will also help reviews of new code using existing
DTS as template. No functional impact on Linux drivers behavior.

Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20231108104343.24192-18-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: add pwm node for exynosautov9-sadk

Add pwm node to support fan on exynosautov9-sadk board.
PWM channel 3 of ExynosAutov9 is connected to fan for SoC cooling
in SADK board.

Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com>
Link: https://lore.kernel.org/r/20230718062200.79306-3-jaewon02.kim@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: add missing space before {

Add missing whitespace between node name/label and opening {.

Link: https://lore.kernel.org/r/20230705145942.293527-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: add dedicated SYSREG compatibles to Exynosautov9

Exynosautov9 has several different SYSREGs, so use dedicated compatibles
for them.

Signed-off-by: Sriranjani P <sriranjani.p@samsung.com>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20221214044342.49766-5-sriranjani.p@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynosautov9: add fsys0/1 clock DT nodes

Add cmu_fsys0 and cmu_fsys1 for PCIe clocks and USB/MMC clocks
respectively.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
[krzk: put nodes ordered by unit address]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/50f8145bca30cf5c900359d0b78c1c617090e021.1659054220.git.chanho61.park@samsung.com

arm64: dts: exynosautov9: add usi device tree nodes

Universal Serial Interface (USI) supports three types of serial interface
such as Universal Asynchronous Receiver and Transmitter (UART), Serial
Peripheral Interface (SPI), and Inter-Integrated Circuit (I2C).
Each protocols can be working independently and configured as one of
those using external configuration inputs.
Exynos Auto v9 SoC support 12 USIs. When a USI uses two pins such as i2c
and 3 wire uarts(RX/TX only), we can use remain two pins as i2c mode.
So, we can define one USI node that includes serial/spi and hsi2c.
usi_i2c nodes can be used only for i2c mode.

We can have below combinations for one USI.
1) The usi node is used either 4 pin uart or 4 pin spi
-> No usi_i2c can be used
2) The usi node is used 2 pin uart(RX/TX) and i2c(SDA/SCL)
-> usi_i2c should be enabled to use the latter i2c
3) The usi node is used i2c(SDA/SCL) and i2c(SDA/SCL)
-> usi_i2c should be enabled to use the latter i2c

By default, all USIs are initially set to uart mode by below setting.
samsung,mode = <USI_V2_UART>;
You can change it either USI_V2_SPI or USI_V2_I2C.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220701015226.32781-6-chanho61.park@samsung.com

arm64: dts: exynosautov9: prepare usi0 changes

Before adding whole USI nodes, this applies the changes of usi0 in
advance. To be the usi0 and serian_0 nodes as SoC default, some
properties should be moved to exynosautov9-sadk.dts.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220701015226.32781-5-chanho61.park@samsung.com

arm64: dts: exynosautov9: add pdma0 device tree node

Add an ARM pl330 dma controller DT node as pdma0.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220701015226.32781-4-chanho61.park@samsung.com

arm64: dts: exynos: add secondary ufs devices in ExynosAutov9

Add ufs_1_phy and ufs_1 for secondary ufs hci controller and phy
device.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220607070251.15795-2-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: adjust DT style of ufs nodes in ExynosAutov9

Drop "ufs0-" label name usage of ufs phy and hci nodes.
Regarding the comments of reg properties, we don't need to illustrate here
because we can find the description from the dt-binding doc.

Suggested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220602053250.62593-5-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: adjust whitespace around '='

Fix whitespace coding style: use single space instead of tabs or
multiple spaces around '=' sign in property assignment. No functional
changes (same DTB).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20220526204323.832243-1-krzysztof.kozlowski@linaro.org

arm64: dts: exynos: add watchdog in ExynosAutov9

Adds two CPU watchdog devices for ExynosAutov9 SoC.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220523113919.59571-4-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: add syscon reboot/reboot_mode support in ExynosAutov9

Reboot of exynosautov9 SoC can be handled by setting the
bit(SWRESET_SYSTEM[1]) of SYSTEM_CONFIGURATION register(PMU + 0x3a00).
syscon-reboot-mode can be used to indicate the reboot mode for
bootloader. SYSIP_DAT0 register(PMU + 0x810) will not be cleared after
reboot so bootloader can enter the boot mode according to the value.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220523121244.67341-3-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: switch UFS clock node in ExynosAutov9

Use cmu_fsys's clock node instead of dummy UFS clock node.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/r/20220504075154.58819-13-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: switch USI clocks in ExynosAutov9

Use CMU clock nodes instead of dummy fixed-rate-clock.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/r/20220504075154.58819-12-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: add initial CMU clock nodes in ExynosAutov9

Add cmu_top, cmu_busmc, cmu_core, cmu_fsys and peric0/c1/s clock nodes.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/r/20220504075154.58819-11-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

arm64: dts: exynos: move XTCXO clock frequency to board in Exynos Auto v9

The external oscillator - XTCXO - is an input to the SoC. It is defined
in the Exynos Auto v9 SoC DTSI, because all boards will provide it and
clock controller bindings expect it, however the actual frequency of the
clock should be determined by the board.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220503092631.174713-1-krzysztof.kozlowski@linaro.org

arm64: dts: exynos: use dedicated wake-up pinctrl compatible in ExynosAutov9

Older Samsung Exynos SoC pin controller nodes (Exynos3250, Exynos4,
Exynos5, Exynos5433) with external wake-up interrupts, expected to have
one interrupt for multiplexing these wake-up interrupts. Also they
expected to have exactly one pin controller capable of external wake-up
interrupts.

It seems however that newer ARMv8 Exynos SoC like Exynos850 and
ExynosAutov9 have differences:
1. No multiplexed external wake-up interrupt, only direct,
2. More than one pin controller capable of external wake-up interrupts.

Use dedicated ExynosAutov9 compatible for its external wake-up interrupts
controller to indicate the differences.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Chanho Park <chanho61.park@samsung.com>
Tested-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220111201722.327219-22-krzysztof.kozlowski@canonical.com

arm64: dts: exynos: convert serial_0 to USI on ExynosAutov9

According to USI v2 driver change[1], serial_0 node should be converted to
use the USI node hierarchy. syscon_peric0 will be used as a syscon node
to control the USI00_USI_SW_CONF register.
This also changes the serial node name from uart@ to serial@.

[1]: https://lore.kernel.org/linux-samsung-soc/20211204195757.8600-2-semen.protsenko@linaro.org/

Cc: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20211208091853.8557-1-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

arm64: dts: exynos: drop samsung,ufs-shareability-reg-offset in ExynosAutov9

samsung,ufs-shareability-reg-offset is not necessary anymore since it
was integrated into the second argument of samsung,sysreg.

Fixes: 31bbac5263aa ("arm64: dts: exynos: add initial support for exynosautov9 SoC")
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20211102064826.15796-1-chanho61.park@samsung.com
Link: https://lore.kernel.org/r/20211124085042.9649-2-krzysztof.kozlowski@canonical.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arm64: dts: exynos: add chipid node for exynosautov9 SoC

It can be compatible with exynos850's chipid. The SoC has eight chipid
registers that can be used for OTP.

Cc: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20211021012017.158919-3-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

arm64: dts: exynos: add initial support for exynosautov9 SoC

Add minimal support for ExynosAuto v9 SoC[1].

- Enumarate all pinctrl nodes
- UART with exynos850 compatible
- UFS0 HCI + Phy

Like exynos850, this also uses fixed-rate clock nodes until clock driver
has been supported. The clock nodes are initialized on bootloader stage
thus we don't need to control them so far.

[1]: https://www.samsung.com/semiconductor/minisite/exynos/products/automotiveprocessor/exynos-auto-v9/

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20211012002314.38965-3-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>