Commit ba61ab1a authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

Merge tag 'zynqmp-soc-for-v4.20-v2' of https://github.com/Xilinx/linux-xlnx into next/drivers 

arm64: zynqmp: SoC changes for v4.20

- Adding firmware API for SoC with debugfs interface
  Firmware driver communicates to Platform Management Unit (PMU) by using
  SMC instructions routed to Arm Trusted Firmware (ATF). Initial version
  adds support for base firmware driver with query and clock APIs.

  EEMI spec is available here:
  https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf

* tag 'zynqmp-soc-for-v4.20-v2' of https://github.com/Xilinx/linux-xlnx

:
  firmware: xilinx: Add debugfs for query data API
  firmware: xilinx: Add debugfs interface
  firmware: xilinx: Add clock APIs
  firmware: xilinx: Add query data API
  firmware: xilinx: Add Zynqmp firmware driver
  dt-bindings: firmware: Add bindings for ZynqMP firmware

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parents 1e25ee6d e60f02dd

Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt

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-----------------------------------------------------------------

Device Tree Bindings for the Xilinx Zynq MPSoC Firmware Interface

-----------------------------------------------------------------



The zynqmp-firmware node describes the interface to platform firmware.

ZynqMP has an interface to communicate with secure firmware. Firmware

driver provides an interface to firmware APIs. Interface APIs can be

used by any driver to communicate to PMUFW(Platform Management Unit).

These requests include clock management, pin control, device control,

power management service, FPGA service and other platform management

services.



Required properties:

 - compatible:	Must contain:	"xlnx,zynqmp-firmware"

 - method:	The method of calling the PM-API firmware layer.

		Permitted values are:

		  - "smc" : SMC #0, following the SMCCC

		  - "hvc" : HVC #0, following the SMCCC



-------

Example

-------



firmware {

	zynqmp_firmware: zynqmp-firmware {

		compatible = "xlnx,zynqmp-firmware";

		method = "smc";

	};

};

arch/arm64/Kconfig.platforms

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@@ -301,6 +301,7 @@ config ARCH_ZX 


config ARCH_ZYNQMP

	bool "Xilinx ZynqMP Family"

	select ZYNQMP_FIRMWARE

	help

	  This enables support for Xilinx ZynqMP Family

drivers/firmware/Kconfig

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@@ -291,5 +291,6 @@ source "drivers/firmware/google/Kconfig" 
source "drivers/firmware/efi/Kconfig"

source "drivers/firmware/meson/Kconfig"

source "drivers/firmware/tegra/Kconfig"

source "drivers/firmware/xilinx/Kconfig"



endmenu

drivers/firmware/Makefile

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@@ -32,3 +32,4 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/ 
obj-$(CONFIG_EFI)		+= efi/

obj-$(CONFIG_UEFI_CPER)		+= efi/

obj-y				+= tegra/

obj-y				+= xilinx/

drivers/firmware/xilinx/Kconfig

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# SPDX-License-Identifier: GPL-2.0

# Kconfig for Xilinx firmwares



menu "Zynq MPSoC Firmware Drivers"

	depends on ARCH_ZYNQMP



config ZYNQMP_FIRMWARE

	bool "Enable Xilinx Zynq MPSoC firmware interface"

	help

	  Firmware interface driver is used by different

	  drivers to communicate with the firmware for

	  various platform management services.

	  Say yes to enable ZynqMP firmware interface driver.

	  If in doubt, say N.



config ZYNQMP_FIRMWARE_DEBUG

	bool "Enable Xilinx Zynq MPSoC firmware debug APIs"

	depends on ZYNQMP_FIRMWARE && DEBUG_FS

	help

	  Say yes to enable ZynqMP firmware interface debug APIs.

	  If in doubt, say N.



endmenu

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