For the RK3399-Q7, we have a few additional features in the SPL boot path that we'd like to see supported in the mainline: - The override signal BIOS_DISABLE keeps the on-module SPI and eMMC powered-down (actually: in reset) to force booting from external sources. Before proceeding with the SPL boot, we thus need to power the devices up (actually: release the reset) in software. This is done using the regulator framework and a fixed regulator. - Depending on the boot-sources and system configuration, we may want to insert the device the SPL stage was booted from at the start of the boot order, for these we introduce the special device select 'same-as-spl' for the boot-order.
This series contains the following changes: * moves board-specific functionality for the RK3399 SPL stage from the shared SPL board support file to individual ones for the EVB and Puma. * enables the power-regulator framework of Puma * adds fixed regulator support for powering up the eMMC and SPI flashes * adds support for the 'same-as-spl' specifier for the boot order (incl. updating the documentation for this
Philipp Tomsich (10): rockchip: rk3399: make spl_board_init board-specific rockchip: bootrom: add definitions to retrieve BROM boot-source rockchip: spl: add documentation for spl_node_to_boot_device() rockchip: spl: support a 'same-as-spl'-specifier in the spl-boot-order rockchip: spl: rk3399: implement chip-specific board_spl_was_booted_from() rockchip: dts: rk3399-puma: add 'same-as-spl' to the front of the boot-order rockchip: puma-rk3399: update board_init() rockchip: rk3399-puma: add boot-on regulator to override BIOS_DISABLE power: spl: add SPL_DM_REGULATOR_FIXED in Kconfig rockchip: defconfig: puma-rk3399: update for DM_REGULATOR support in SPL
arch/arm/dts/rk3399-puma.dtsi | 26 +++++++++- arch/arm/include/asm/arch-rockchip/bootrom.h | 18 +++++++ arch/arm/mach-rockchip/rk3399-board-spl.c | 51 +++++++++----------- arch/arm/mach-rockchip/spl-boot-order.c | 48 +++++++++++++++++- board/rockchip/evb_rk3399/evb-rk3399.c | 32 +++++++++++- board/theobroma-systems/puma_rk3399/puma-rk3399.c | 59 +++++++++-------------- configs/puma-rk3399_defconfig | 7 ++- doc/device-tree-bindings/chosen.txt | 12 ++++- drivers/power/regulator/Kconfig | 7 +++ 9 files changed, 192 insertions(+), 68 deletions(-)