RISC-V: Add arch functions to support hibernation/suspend-to-disk

Low level Arch functions were created to support hibernation.
swsusp_arch_suspend() relies code from __cpu_suspend_enter() to write
cpu state onto the stack, then calling swsusp_save() to save the memory
image.

Arch specific hibernation header is implemented and is utilized by the
arch_hibernation_header_restore() and arch_hibernation_header_save()
functions. The arch specific hibernation header consists of satp, hartid,
and the cpu_resume address. The kernel built version is also need to be
saved into the hibernation image header to making sure only the same
kernel is restore when resume.

swsusp_arch_resume() creates a temporary page table that covering only
the linear map. It copies the restore code to a 'safe' page, then start
to restore the memory image. Once completed, it restores the original
kernel's page table. It then calls into __hibernate_cpu_resume()
to restore the CPU context. Finally, it follows the normal hibernation
path back to the hibernation core.

To enable hibernation/suspend to disk into RISCV, the below config
need to be enabled:
- CONFIG_ARCH_HIBERNATION_HEADER
- CONFIG_ARCH_HIBERNATION_POSSIBLE

Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Reviewed-by: Ley Foon Tan <leyfoon.tan@starfivetech.com>
Reviewed-by: Mason Huo <mason.huo@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

RISC-V: Factor out common code of __cpu_resume_enter()

The cpu_resume() function is very similar for the suspend to disk and
suspend to ram cases. Factor out the common code into suspend_restore_csrs
macro and suspend_restore_regs macro.

Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

RISC-V: Change suspend_save_csrs and suspend_restore_csrs to public function

Currently suspend_save_csrs() and suspend_restore_csrs() functions are
statically defined in the suspend.c. Change the function's attribute
to public so that the functions can be used by hibernation as well.

Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Reviewed-by: Ley Foon Tan <leyfoon.tan@starfivetech.com>
Reviewed-by: Mason Huo <mason.huo@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>

dts: usb: add StarFive JH7110 USB dts configuration.

USB Glue layer and Cadence USB subnode configuration,
also includes USB and PCIe phy dts configuration.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>

usb: cdns3: add StarFive JH7110 USB driver.

There is a Cadence USB3 core for JH7110 SoCs, the cdns
core is the child of this USB wrapper module device.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>

dt-binding: Add JH7110 USB wrapper layer doc.

The dt-binding doc of Cadence USBSS-DRD controller wrapper
layer.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Reviewed-by: Peter Chen <peter.chen@kernel.org>

phy: starfive: add JH7110 PCIE 2.0 and USB 2.0 PHY driver.

Add Starfive JH7110 SoC PCIe 2.0 and USB 2.0 PHY driver support.
PCIe 2.0 PHY can used as USB 3.0 PHY

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>

dt-bindings: phy: Add StarFive JH7110 USB/PCIe document

Add StarFive JH7110 SoC USB 2.0/3.0 and PCIe 2.0 PHY dt-binding.
PCIe 2.0 phy can use as USB 3.0 PHY.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>

media: starfive: Add Starfive Camera Subsystem driver

Add the driver for Starfive Camera Subsystem found on
Starfive JH7110 SoC. It is used for handing image sensor
data.

Signed-off-by: Jack Zhu <jack.zhu@starfivetech.com>

MAINTAINERS: Add Starfive Camera Subsystem driver

Add an entry for Starfive Camera Subsystem driver.

Signed-off-by: Jack Zhu <jack.zhu@starfivetech.com>

media: cadence: Add support for external dphy and JH7110 SoC

Add support for external MIPI D-PHY and Starfive JH7110 SoC which
has the cadence csi2 receiver.

Signed-off-by: Jack Zhu <jack.zhu@starfivetech.com>

media: admin-guide: Add starfive_camss.rst for Starfive Camera Subsystem

Add the file 'starfive_camss.rst' that documents the Starfive Camera
Subsystem driver which is used for handing image sensor data.

Signed-off-by: Jack Zhu <jack.zhu@starfivetech.com>

media: dt-bindings: cadence-csi2rx: Convert to DT schema

Convert DT bindings document for Cadence MIPI-CSI2 RX controller
to DT schema format and add new properties.

Signed-off-by: Jack Zhu <jack.zhu@starfivetech.com>

media: dt-bindings: Add bindings for JH7110 Camera Subsystem

Add the bindings documentation for Starfive JH7110 Camera Subsystem
which is used for handing image sensor data.

Signed-off-by: Jack Zhu <jack.zhu@starfivetech.com>

riscv: dts: starfive: Add dphy rx node

Add dphy rx node for the StarFive JH7110 SoC. It is used to transfer CSI
camera data.

Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>

phy: starfive: Add mipi dphy rx support

Add mipi dphy rx support for the StarFive JH7110 SoC. It is used to
transfer CSI camera data.

Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>

dt-bindings: phy: Add starfive,jh7110-dphy-rx

StarFive SoCs like the jh7110 use a MIPI D-PHY RX controller based on
a M31 IP. Add a binding for it.

Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>

crypto: starfive - Add hash and HMAC support

Adding hash/HMAC support for SHA-2 and SM3 to StarFive cryptographic
module.

Co-developed-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>

riscv: dts: starfive: Add crypto and DMA node for VisionFive 2

Add StarFive cryptographic module and dedicated DMA controller node to
VisionFive 2 SoCs.

Co-developed-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>

crypto: starfive - Add crypto engine support

Adding device probe and DMA init for StarFive cryptographic module.

Co-developed-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>

dt-bindings: crypto: Add StarFive crypto module

Add documentation to describe StarFive cryptographic engine.

Co-developed-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>
Reviewed-by: Rob Herring <robh@kernel.org>

riscv: dts: starfive: Add TRNG node for VisionFive 2

Adding StarFive TRNG controller node to VisionFive 2 board.

Co-developed-by: Jenny Zhang <jenny.zhang@starfivetech.com>
Signed-off-by: Jenny Zhang <jenny.zhang@starfivetech.com>
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>

riscv: dts: starfive: add dma controller node

Add the dma controller node for the Starfive JH7110 SoC.

Signed-off-by: Walker Chen <walker.chen@starfivetech.com>

dmaengine: dw-axi-dmac: Add support for StarFive JH7110 DMA

Add DMA reset operation in device probe and use different configuration
on CH_CFG registers according to match data. Update all uses of
of_device_is_compatible with of_device_get_match_data.

Signed-off-by: Walker Chen <walker.chen@starfivetech.com>

dt-bindings: dma: snps,dw-axi-dmac: constrain the items of resets for JH7110 dma

The DMA controller needs two reset items to work properly on JH7110 SoC,
so there is need to constrain the items' value to 2, other platforms
have 1 reset item at most.

Signed-off-by: Walker Chen <walker.chen@starfivetech.com>
Reviewed-by: Rob Herring <robh@kernel.org>

riscv: dts: starfive: visionfive-2: Add thermal-zones

Add thermal-zones for StarFive VisionFive 2 board.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

riscv: dts: starfive: jh7110: Add temperature sensor node

Add temperature sensor support for StarFive JH7110 SoC.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

hwmon: (sfctemp) Add StarFive JH71x0 temperature sensor

Add driver for the StarFive JH71x0 temperature sensor. You
can enable/disable it and read temperature in milli Celcius
through sysfs.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Co-developed-by: Samin Guo <samin.guo@starfivetech.com>
Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

dt-bindings: hwmon: Add starfive,jh71x0-temp

Add bindings for the temperature sensor on the StarFive JH7100 and
JH7110 SoCs.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Reviewed-by: Rob Herring <robh@kernel.org>

riscv: dts: starfive: visionfive 2: Add configuration of gmac and phy

v1.3B:
  v1.3B uses motorcomm YT8531(rgmii-id phy) x2, need delay and
  inverse configurations.
  The tx_clk of v1.3B uses an external clock and needs to be
  switched to an external clock source.

v1.2A:
  v1.2A gmac0 uses motorcomm YT8531(rgmii-id) PHY, and needs delay
  configurations.
  v1.2A gmac1 uses motorcomm YT8512(rmii) PHY, and needs to
  switch rx and rx to external clock sources.

Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>

riscv: dts: starfive: jh7110: Add ethernet device nodes

Add JH7110 ethernet device node to support gmac driver for the JH7110
RISC-V SoC.

Signed-off-by: Yanhong Wang <yanhong.wang@starfivetech.com>
Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>

net: stmmac: starfive_dmac: Add phy interface settings

dwmac supports multiple modess. When working under rmii and rgmii,
you need to set different phy interfaces.

According to the dwmac document, when working in rmii, it needs to be
set to 0x4, and rgmii needs to be set to 0x1.

The phy interface needs to be set in syscon, the format is as follows:
starfive,syscon: <&syscon, offset, shift>

Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>

net: stmmac: Add glue layer for StarFive JH7110 SoC

This adds StarFive dwmac driver support on the StarFive JH7110 SoC.

Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>

dt-bindings: net: Add support StarFive dwmac

Add documentation to describe StarFive dwmac driver(GMAC).

Signed-off-by: Yanhong Wang <yanhong.wang@starfivetech.com>
Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>

dt-bindings: net: snps,dwmac: Add 'ahb' reset/reset-name

According to:
stmmac_platform.c: stmmac_probe_config_dt
stmmac_main.c: stmmac_dvr_probe

dwmac controller may require one (stmmaceth) or two (stmmaceth+ahb)
reset signals, and the maxItems of resets/reset-names is going to be 2.

The gmac of Starfive Jh7110 SOC must have two resets.
it uses snps,dwmac-5.20 IP.

Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>

net: stmmac: platform: Add snps,dwmac-5.20 IP compatible string

Add "snps,dwmac-5.20" compatible string for 5.20 version that can avoid
to define some platform data in the glue layer.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>

dt-bindings: net: snps,dwmac: Add dwmac-5.20 version

Add dwmac-5.20 IP version to snps.dwmac.yaml

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>

riscv: dts: starfive: Add PWM node

Adding StarFive PWM controller node to VisionFive 2 SoC.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>

pwm: starfive: Add PWM driver support

Add Pulse Width Modulation driver support for StarFive
JH7110 soc.

Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: William Qiu <william.qiu@starfivetech.com>

dt-bindings: PWM: Add StarFive PWM module

Add documentation to describe StarFive Pulse Width Modulation
controller driver.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

riscv: dts: starfive: jh7110: Add qspi controller node

Add the quad spi controller node for the Starfive JH7110 SoC.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>

spi: cadence-quadspi: Add support for StarFive JH7110 QSPI

Add QSPI reset operation in device probe and add RISCV support to
QUAD SPI Kconfig.

Co-developed-by: Ziv Xu <ziv.xu@starfivetech.com>
Signed-off-by: Ziv Xu <ziv.xu@starfivetech.com>
Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Link: https://lore.kernel.org/r/20230302105221.197421-3-william.qiu@starfivetech.com
Signed-off-by: Mark Brown <broonie@kernel.org>

dt-bindings: qspi: cdns,qspi-nor: constrain minItems/maxItems of resets

The QSPI controller needs three reset items to work properly on JH7110 SoC,
so there is need to change the maxItems's value to 3 and add minItems
whose value is equal to 2. Other platforms do not have this constraint.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Link: https://lore.kernel.org/r/20230302105221.197421-2-william.qiu@starfivetech.com
Signed-off-by: Mark Brown <broonie@kernel.org>

riscv: dts: starfive: Add mmc node

Adds the mmc node for the StarFive JH7110 SoC.
Set mmco node to emmc and set mmc1 node to sd.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>

riscv: dts: jh7110: starfive: Add timer node

Add the timer node for the Starfive JH7110 SoC.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

clocksource: Add StarFive timer driver

Add timer driver for the StarFive JH7110 SoC.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

dt-bindings: timer: Add timer for StarFive JH7110 SoC

Add bindings for the timer on the JH7110 RISC-V SoC
by StarFive Technology Ltd.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

riscv: dts: starfive: jh7110: Add watchdog node

Add the watchdog node for the Starfive JH7110 SoC.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

riscv: dts: starfive: jh7100: Add watchdog node

Add watchdog node for the StarFive JH7100 RISC-V SoC.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>

drivers: watchdog: Add StarFive Watchdog driver

Add watchdog driver for the StarFive JH7100 and JH7110 SoC.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

dt-bindings: watchdog: Add watchdog for StarFive JH7100 and JH7110

Add bindings to describe the watchdog for the StarFive JH7100/JH7110 SoC.
And Use JH7100 as first StarFive SoC with watchdog.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

riscv: dts: starfive: jh7110: Add PLL clock node and modify syscrg node

Add the PLL clock node for the Starfive JH7110 SoC and
modify the SYSCRG node to add PLL clocks.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

clk: starfive: jh7110-sys: Modify PLL clocks source

Modify PLL clocks source to be got from dts instead of
the fixed factor clocks.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

dt-bindings: clock: jh7110-syscrg: Add PLL clock inputs

Add PLL clock inputs from PLL clock generator.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

dt-bindings: soc: starfive: syscon: Add optional patternProperties

Add optional compatible and patternProperties.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

clk: starfive: Add StarFive JH7110 PLL clock driver

Add driver for the StarFive JH7110 PLL clock controller.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

dt-bindings: clock: Add StarFive JH7110 PLL clock generator

Add bindings for the PLL clock generator on the JH7110 RISC-V SoC.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

riscv: dts: starfive: jh7110: Add STGCRG/ISPCRG/VOUTCRG nodes

Add STGCRG/ISPCRG/VOUTCRG new node to support JH7110
System-Top-Group, Image-Signal-Process and Video-Output
clock and reset drivers for the JH7110 RISC-V SoC.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

riscv: dts: starfive: jh7110: Add DVP and HDMI TX pixel external clocks

Add DVP and HDMI TX pixel external fixed clocks and the rates are
74.25MHz and 297MHz.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

clk: starfive: Add StarFive JH7110 Video-Output clock driver

Add driver for the StarFive JH7110 Video-Output clock controller.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

reset: starfive: jh7110: Add StarFive Video-Output reset support

Add auxiliary_device_id to support StarFive JH7110 Video-Output resets
of which the auxiliary device name is "clk_starfive_jh71x0.reset-vout".

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

dt-bindings: clock: Add StarFive JH7110 Video-Output clock and reset generator

Add bindings for the Video-Output clock and reset generator (VOUTCRG)
on the JH7110 RISC-V SoC by StarFive Ltd.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

clk: starfive: Add StarFive JH7110 Image-Signal-Process clock driver

Add driver for the StarFive JH7110 Image-Signal-Process clock controller.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

reset: starfive: jh7110: Add StarFive Image-Signal-Process reset support

Add auxiliary_device_id to support StarFive JH7110 Image-Signal-Process
resets of which the auxiliary device name is
"clk_starfive_jh71x0.reset-isp".

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

dt-bindings: clock: Add StarFive JH7110 Image-Signal-Process clock and reset generator

Add bindings for the Image-Signal-Process clock and reset
generator (ISPCRG) on the JH7110 RISC-V SoC by StarFive Ltd.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

clk: starfive: Add StarFive JH7110 System-Top-Group clock driver

Add driver for the StarFive JH7110 System-Top-Group clock controller.

Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Co-developed-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

reset: starfive: jh7110: Add StarFive System-Top-Group reset support

Add auxiliary_device_id to support StarFive JH7110 System-Top-Group resets
of which the auxiliary device name is "clk_starfive_jh71x0.reset-stg".

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>

dt-bindings: clock: Add StarFive JH7110 System-Top-Group clock and reset generator

Add bindings for the System-Top-Group clock and reset generator (STGCRG)
on the JH7110 RISC-V SoC by StarFive Ltd.

Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

riscv: dts: starfive: Add syscon node

Add stg_syscon/sys_syscon/aon_syscon node for JH7110 Soc.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>

dt-bindings: soc: starfive: Add StarFive syscon doc

Add documentation to describe StarFive System Controller Registers.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

riscv: dts: starfive: add pmu controller node

Add the pmu controller node for the Starfive JH7110 SoC. The PMU needs
to be used by other modules such as VPU, ISP, etc.

Signed-off-by: Walker Chen <walker.chen@starfivetech.com>

riscv: dts: starfive: Add StarFive JH7110 VisionFive 2 board device tree

Add a minimal device tree for StarFive JH7110 VisionFive 2 board
which has version A and version B. Support booting and basic
clock/reset/pinctrl/uart drivers.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Co-developed-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Co-developed-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

riscv: dts: starfive: Add StarFive JH7110 pin function definitions

Add pin function definitions for StarFive JH7110 SoC.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

riscv: dts: starfive: Add initial StarFive JH7110 device tree

Add initial device tree for the JH7110 RISC-V SoC by StarFive
Technology Ltd.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Co-developed-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Co-developed-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

dt-bindings: riscv: Add SiFive S7 compatible

Add a new compatible string in cpu.yaml for SiFive S7 CPU
core which is used on SiFive U74-MC core complex etc.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

dt-bindings: interrupt-controller: Add StarFive JH7110 plic

Add compatible string for StarFive JH7110 plic.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

dt-bindings: timer: Add StarFive JH7110 clint

Add compatible string for the StarFive JH7110 clint.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

reset: starfive: Add StarFive JH7110 reset driver

Add auxiliary driver to support StarFive JH7110 system
and always-on resets.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

clk: starfive: Add StarFive JH7110 always-on clock driver

Add driver for the StarFive JH7110 always-on clock controller
and register an auxiliary device for always-on reset controller
which is named as "reset-aon".

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Co-developed-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

clk: starfive: Add StarFive JH7110 system clock driver

Add driver for the StarFive JH7110 system clock controller and
register an auxiliary device for system reset controller which
is named as "reset-sys".

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Co-developed-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

dt-bindings: clock: Add StarFive JH7110 always-on clock and reset generator

Add bindings for the always-on clock and reset generator (AONCRG) on the
JH7110 RISC-V SoC by StarFive Ltd.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

dt-bindings: clock: Add StarFive JH7110 system clock and reset generator

Add bindings for the system clock and reset generator (SYSCRG) on the
JH7110 RISC-V SoC by StarFive Ltd.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

reset: starfive: jh71x0: Use 32bit I/O on 32bit registers

We currently use 64bit I/O on the 32bit registers. This works because
there are an even number of assert and status registers, so they're only
ever accessed in pairs on 64bit boundaries.

There are however other reset controllers for audio and video on the
JH7100 SoC with only one status register that isn't 64bit aligned so
64bit I/O results in an unaligned access exception.

Switch to 32bit I/O in preparation for supporting these resets too.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

reset: starfive: Rename "jh7100" to "jh71x0" for the common code

For the common code will be shared with the StarFive JH7110 SoC.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

reset: starfive: Extract the common JH71X0 reset code

Extract the common JH71X0 reset code for reusing them to
support JH7110 SoC.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

reset: starfive: Factor out common JH71X0 reset code

The StarFive JH7100 SoC has additional reset controllers for audio and
video, but the registers follow the same structure. On the JH7110 the
reset registers don't get their own memory range, but instead follow the
clock control registers. The registers still follow the same structure
though, so let's factor out the common code to handle all these cases.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

reset: Create subdirectory for StarFive drivers

This moves the StarFive JH7100 reset driver to a new subdirectory in
preparation for adding more StarFive reset drivers.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

reset: starfive: Replace SOC_STARFIVE with ARCH_STARFIVE

Using ARCH_FOO symbol is preferred than SOC_FOO.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

clk: starfive: Rename "jh7100" to "jh71x0" for the common code

Rename some variables from "jh7100" or "JH7100" to "jh71x0"
or "JH71X0".

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

clk: starfive: Rename clk-starfive-jh7100.h to clk-starfive-jh71x0.h

Rename clk-starfive-jh7100.h to clk-starfive-jh71x0.h for making
the code to be common.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

clk: starfive: Factor out common JH7100 and JH7110 code

The clock control registers on the StarFive JH7100 and JH7110 work
identically, so factor out the code then drivers for the two SoCs
can share it without depending on each other. No functional change.

Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

clk: starfive: Replace SOC_STARFIVE with ARCH_STARFIVE

Using ARCH_FOO symbol is preferred than SOC_FOO.
Set obj-y for starfive/ in Makefile, so the StarFive drivers
can be compiled with COMPILE_TEST=y but ARCH_STARFIVE=n.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>

RISC-V: introduce ARCH_FOO kconfig aliases for SOC_FOO symbols

To facilitate a transfer from SOC_FOO to ARCH_FOO, over a release cycle,
introduce some aliases so that drivers etc that use the SOC_FOO symbols
can be converted.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
---
To me, the most straight-forward conversion looks like so:
- this patch is applied in week 2 of the merge window, to avoid
  any conflicts with the Renesas tree
- all users of the SOC_ variants can be converted over a release cycle
  (or more) & no trees need to merge an immutable branch.
- we convert defconfig etc over after all users are converted
- doing it over at least one release cycle means that `make oldconfig`
  will keep people's configs working as they upgrade
- any new SoC families added uses ARCH_FOO

Change-Id: I176b3cddcdbd2591d639d4696d42844e52c87f6a

riscv: dts: starfive: Add StarFive VisionFive V1 device tree

Add initial device tree for the StarFive VisionFive V1 SBC, which
is similar with the already supported BeagleV Starlight Beta board,
both being based on the StarFive JH7100 SoC.

Link: https://github.com/starfive-tech/VisionFive
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

riscv: dts: starfive: Add common DT for JH7100 based boards

In preparation for adding initial device tree support for the StarFive
VisionFive board, which is similar with BeagleV Starlight, move most
of the content from jh7100-beaglev-starlight.dts to a new file, to be
shared between the two boards.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

mmc: starfive: Add sdio/emmc driver support

Add sdio/emmc driver support for StarFive JH7110 soc.

Change-Id: Ic2d6ff5241f3e6be2a6952643a4836edb30fed06
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Link: https://lore.kernel.org/r/20230215113249.47727-3-william.qiu@starfivetech.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

dt-bindings: mmc: Add StarFive MMC module

Add documentation to describe StarFive designware mobile storage
host controller driver.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230215113249.47727-2-william.qiu@starfivetech.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

pinctrl: starfive: Add StarFive JH7110 aon controller driver

Add pinctrl driver for StarFive JH7110 SoC aon pinctrl controller.

Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/r/20230209143702.44408-5-hal.feng@starfivetech.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

pinctrl: starfive: Add StarFive JH7110 sys controller driver

Add pinctrl driver for StarFive JH7110 SoC sys pinctrl controller.

Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/r/20230209143702.44408-4-hal.feng@starfivetech.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

dt-bindings: pinctrl: Add StarFive JH7110 aon pinctrl

Add pinctrl bindings for StarFive JH7110 SoC aon pinctrl controller.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/r/20230209143702.44408-3-hal.feng@starfivetech.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>