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rockchip: rk3399: Add support for chromebook_kevin

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Add support for Kevin, an RK3399-based convertible chromebook that is
very similar to Bob. This patch is mostly based on existing support for
Bob, with only minor changes for Kevin-specific things.

Unlike other Gru boards, coreboot sets Kevin's center logic to 925 mV,
so adjust it here in the dts as well. The rk3399-gru-kevin devicetree
has an unknown event code reference which has to be defined, set it
to the Linux counterpart. The new defconfig is copied from Bob with the
diffconfig:

     DEFAULT_DEVICE_TREE "rk3399-gru-bob" -> "rk3399-gru-kevin"
     DEFAULT_FDT_FILE "rockchip/rk3399-gru-bob.dtb" -> "rockchip/rk3399-gru-kevin.dtb"
     VIDEO_ROCKCHIP_MAX_XRES 1280 -> 2400
     VIDEO_ROCKCHIP_MAX_YRES 800 -> 1600
    +TARGET_CHROMEBOOK_KEVIN y

With this Kevin can boot from SPI flash to a usable U-Boot prompt on the
display with the keyboard working, but cannot boot into Linux for
unknown reasons.

eMMC starts in a working state but fails to re-init, microSD card works
but at a lower-than-expected speed, USB works but causes a hang on
de-init. There are known workarounds to solve eMMC and USB issues.

Cc: Marty E. Plummer <hanetzer@startmail.com>
Cc: Simon Glass <sjg@chromium.org>
[Alper: commit message, resync config with Bob, update MAINTAINERS,
        add to Rockchip doc, add Kconfig help message, set regulator]
Co-developed-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Marty E. Plummer
2021-12-24 16:43:46 +03:00
committed by Kever Yang
parent e4015661c3
commit 6d36e92d28
11 changed files with 166 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
board/google/gru/Kconfig
View File

@@ -13,3 +13,19 @@ config BOARD_SPECIFIC_OPTIONS # dummy
def_bool y
endif
if TARGET_CHROMEBOOK_KEVIN
config SYS_BOARD
default "gru"
config SYS_VENDOR
default "google"
config SYS_CONFIG_NAME
default "gru"
config BOARD_SPECIFIC_OPTIONS # dummy
def_bool y
endif

8
board/google/gru/MAINTAINERS
View File

@@ -4,3 +4,11 @@ S: Maintained
F: board/google/gru/
F: include/configs/gru.h
F: configs/chromebook_bob_defconfig
CHROMEBOOK KEVIN BOARD
M: Simon Glass <sjg@chromium.org>
M: Alper Nebi Yasak <alpernebiyasak@gmail.com>
S: Maintained
F: board/google/gru/
F: include/configs/gru.h
F: configs/chromebook_kevin_defconfig

2
board/google/gru/gru.c
View File

@@ -26,7 +26,7 @@ void gru_dummy_function(int i)
int board_early_init_f(void)
{
# ifdef CONFIG_TARGET_CHROMEBOOK_BOB
# if defined(CONFIG_TARGET_CHROMEBOOK_BOB) || defined(CONFIG_TARGET_CHROMEBOOK_KEVIN)
int sum, i;
/*