[U-Boot] [PATCH v4 0/9] arm: socfpga: implement proper peripheral reset handling
Marek Vasut
marex at denx.de
Fri Mar 1 19:16:51 UTC 2019
On 3/1/19 8:12 PM, Simon Goldschmidt wrote:
> This series implements peripheral reset handling for socfpga gen5.
>
> It moves from enabling all peripherals during SPL startup to using the
> socfpga reset driver from all peripherals and enabling peripherals when
> they are used.
>
> As Linux cannot even handle this in 4.20, the reset driver implements a
> compatibility mode where it takes all peripherals out of reset before
> jumping to the OS if an environment variable "socfpga_legacy_reset_compat=1"
> is found. This is enabled by default for socfpga gen5 boards, but should
> be moved to default off in the near future once a Linux kernel supports
> reset handling for all drivers.
>
> Changes in v4:
> - added patch that renames 'membase' to 'modrst_base'
>
> Changes in v3:
> - centralize u-boot,dem-pre-reloc for soc, rst and sdr into one common file
> - rename env var to socfpga_legacy_reset_compat
> - add env var to CONFIG_EXTRA_ENV_SETTINGS without further ifdefs
> - changed the order of patches to keep things bisectable
> - fix falcon mode in SPL should work, too
> - change env var name "socfpga_permodrst_ungate" to
> "socfpga_legacy_reset_compat"
> - in compat mode, don't reset peripherals once they are enabled
> - add DM_FLAG_OS_PREPARE flag
> - add DM_FLAG_OS_PREPARE flag
> - keep the call to enable fpga bridges in SPL
>
> Changes in v2:
> - cleanly merged Linux dts (moved change of SDR controller base address
> to a separate patch)
> - this patch is new in v2
> - moved from Kernel option "OLD_SOCFPGA_KERNEL_COMPAT" to environment
> variable "socfpga_permodrst_ungate"
> - port DDR driver to DM UCLASS_RAM
> - don't change DDR calibration training driver (code got too big)
> - use reset.h code instead of socfpga_per_reset()
> - fix copy/paste issues
> - add .remove callback to release the resets
> - add .remove callback to release the resets
> - removed Kconfig option OLD_SOCFPGA_KERNEL_COMPAT since compatibility
> now uses an environment variable
>
> Simon Goldschmidt (9):
> arm: socfpga: gen5: sync devicetrees to Linux
> arm: socfpga: gen5: add reset & sdr node to SPL devicetrees
> reset: socfpga: rename membase ptr to modrst_base
> arm: socfpga: gen5: deassert peripheral reset by default
> reset: socfpga: add reset handling for old kernels
> arm: socfpga: move gen5 SDR driver to DM
> mtd: rawnand: denali: add reset handling
> spi: cadence_qspi: add reset handling
> arm: socfpga: implement proper peripheral reset
>
> arch/arm/Kconfig | 2 +
> arch/arm/dts/socfpga-common-u-boot.dtsi | 19 +++
> arch/arm/dts/socfpga.dtsi | 23 ++-
> arch/arm/dts/socfpga_arria5_socdk-u-boot.dtsi | 6 +-
> arch/arm/dts/socfpga_cyclone5_dbm_soc1.dts | 5 +-
> .../socfpga_cyclone5_de0_nano_soc-u-boot.dtsi | 6 +-
> arch/arm/dts/socfpga_cyclone5_de10_nano.dts | 5 +-
> arch/arm/dts/socfpga_cyclone5_de1_soc.dts | 5 +-
> arch/arm/dts/socfpga_cyclone5_is1.dts | 5 +-
> .../dts/socfpga_cyclone5_socdk-u-boot.dtsi | 6 +-
> .../dts/socfpga_cyclone5_sockit-u-boot.dtsi | 6 +-
> .../dts/socfpga_cyclone5_socrates-u-boot.dtsi | 6 +-
> arch/arm/dts/socfpga_cyclone5_socrates.dts | 2 -
> arch/arm/dts/socfpga_cyclone5_sr1500.dts | 5 +-
> .../socfpga_cyclone5_vining_fpga-u-boot.dtsi | 6 +-
> .../mach-socfpga/include/mach/sdram_gen5.h | 4 -
> arch/arm/mach-socfpga/misc_gen5.c | 10 --
> arch/arm/mach-socfpga/spl_gen5.c | 38 ++---
> drivers/ddr/altera/Kconfig | 1 +
> drivers/ddr/altera/sdram_gen5.c | 143 ++++++++++++++++--
> drivers/ddr/altera/sequencer.c | 9 +-
> drivers/ddr/altera/sequencer.h | 35 +++++
> drivers/mtd/nand/raw/denali.h | 2 +
> drivers/mtd/nand/raw/denali_dt.c | 15 ++
> drivers/reset/reset-socfpga.c | 55 ++++++-
> drivers/spi/cadence_qspi.c | 17 +++
> drivers/spi/cadence_qspi.h | 4 +
> include/configs/socfpga_common.h | 1 +
> 28 files changed, 328 insertions(+), 113 deletions(-)
> create mode 100644 arch/arm/dts/socfpga-common-u-boot.dtsi
>
Applied all to socfpga/next, thanks !
--
Best regards,
Marek Vasut
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