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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

3
include/dt-bindings/input/linux-event-codes.h
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@@ -749,7 +749,8 @@
#define SW_ROTATE_LOCK 0x0c /* set = rotate locked/disabled */
#define SW_LINEIN_INSERT 0x0d /* set = inserted */
#define SW_MUTE_DEVICE 0x0e /* set = device disabled */
#define SW_MAX 0x0f
#define SW_PEN_INSERTED 0x0f /* set = pen inserted */
#define SW_MAX 0x10
#define SW_CNT (SW_MAX+1)
/*