[PATCH 0/11] ARM: at91: Add pbl support to skov-arm9cpu
sam at ravnborg.org
Tue Jun 28 13:38:38 PDT 2022
The following is the current set of patches so far to support
PBL for the skov-arm9cpu.
The pwm is not really part of this - but it is part of the story.
The patch-set was triggered when someone reported a bug in the
atmel pwm code. The code did not build - so I ported it over.
Now I wanted to boot the target, but at91bootstrap no longer
supports the at91sam9263. So I decided to try to make it work
in barebox. I have tried this before and failed - but it should
What I have made is modelled on top of all the great work
for other more modern atmel bouards.
- The first stage bootloader works - thanks to feedback from Ahmad!
- Add support for non-high capacity SD cards, as required by at91sam9 (Ahmad)
- Replace hardcoded delay loops with pit based early delays (Ahmad)
- Several adjustments to skov-arm9cpu code to fit the changes
The following patches are not ready:
- atmel_lcdfb: add support for updated DT bindings
- ARM: at91: Update DTS for skov-arm9cpu
They both rely on updated bindings that has not landed yet,
and which may end up not being compatible with the changes
So the patches works - but bindings are work-in-progress.
My plan is to resurrect my drm driver for at91sam9 and
with that the update the binding file. But timeline
for this work is unknowm.
In other words - I assume patch 1 to 8 + 10 as ready.
Patch 9 + 11 are WIP.
Sam Ravnborg (11):
pwm: atmel: Fix build and update
ARM: at91: Make sdramc.h useable in multi image builds
ARM: at91: Add initialize function to sdramc
ARM: at91: Provide at91_mux_pio_pin for use in lowlevel
mci: atmel_mci: Add PBL helper to configure highcapacity
ARM: at91: Add at91sam9 xload_mmc for PBL use
ARM: at91: Add extra register definitions
ARM: at91: Add lowlevel helpers for at91sam9263
atmel_lcdfb: add support for updated DT bindings
ARM: at91: Add xload support to skov-arm9cpu
ARM: at91: Update DTS for skov-arm9cpu
arch/arm/boards/skov-arm9cpu/board.c | 17 +-
arch/arm/boards/skov-arm9cpu/lowlevel.c | 158 +++------
arch/arm/dts/at91-skov-arm9cpu.dts | 107 +++---
arch/arm/mach-at91/Kconfig | 4 +-
arch/arm/mach-at91/Makefile | 4 +-
arch/arm/mach-at91/at91sam9_sdramc_ll.c | 71 ++++
arch/arm/mach-at91/at91sam9_xload_mmc.c | 118 +++++++
arch/arm/mach-at91/include/mach/at91_pmc.h | 2 +
arch/arm/mach-at91/include/mach/at91sam9263.h | 14 +
.../mach-at91/include/mach/at91sam9263_matrix.h | 23 +-
arch/arm/mach-at91/include/mach/at91sam926x.h | 2 +
arch/arm/mach-at91/include/mach/at91sam9_sdramc.h | 165 ++++++---
arch/arm/mach-at91/include/mach/gpio.h | 25 ++
arch/arm/mach-at91/include/mach/sam92_ll.h | 54 +++
arch/arm/mach-at91/include/mach/xload.h | 5 +
arch/arm/mach-at91/sam9263_ll.c | 215 ++++++++++++
drivers/mci/atmel_mci_pbl.c | 5 +
drivers/pwm/pwm-atmel.c | 383 +++++++++++++++------
drivers/video/atmel_lcdfb.c | 6 +
drivers/video/atmel_lcdfb.h | 4 +
drivers/video/atmel_lcdfb_core.c | 125 +++++--
images/Makefile.at91 | 6 +-
22 files changed, 1167 insertions(+), 346 deletions(-)
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