[PATCH v3 0/6] arm64: dts: rockchip: fix GMAC clocks and USB OTG power on RK3568 boards

[Coia Prant <coiaprant@gmail.com>]

Changes since v1:
- Patch 5 (USB OTG power): Reworked the power tree based on the schematic.
  Instead of tying usb2phy0_otg directly to the boost, model the OR-ed
  5V_OUT rail explicitly. Add vbat, 5v_boost, and 5v_out nodes, and fix
  the vin-supply of vcc5v0_usb30_otg0 to depend on 5v_out. Drop the
  incorrect phy-supply change on usb2phy0_otg.
- Patch 6 (modem power): New patch. Fix vcc3v4_rf vin-supply from
  vccin_5v to vcc_syson so the M.2 B-Key modem does not lose power
  when the board runs on battery.

Changes since v2:
- Patch 5: Fixed vbat min/max mismatch (both set to 3.7V) to satisfy the
  fixed-regulator constraints.
- Patch 5: Fixed vcc5v0_usb30_otg0 to depend on regulator_5v_out instead
  of bypassing it.
- Patch 6: Updated commit message to clarify this is a topology
  correction rather than a runtime hardware switch fix, as both rails
  are always-on.
- Cover letter: updated the summary for Patch 6.

===

This series fixes three classes of board-level issues found while
bringing up several RK3568 boards.

The first four patches address GMAC clock parents. On these boards the
DTS lists SCLK_GMACx in assigned-clocks but only provides a parent for
SCLK_GMACx_RX_TX, so SCLK_GMACx keeps whatever parent the bootloader or
the hardware reset left. Add CLK_MACx_2TOP explicitly so the GMAC main
clock always comes from the internal source. BPI-R2 Pro additionally
describes clock_in_out wrongly ("input" while the port is a fixed-link
with no external 125 MHz clock); switch it to "output" to match the
hardware. On RK3568 clock_in_out does not change the hardware clock
routing today, so that part is a description fix.

Patch 5 fixes USB OTG power on the Ariaboard Photonicat. On battery
power the USB port is dead because the 5V_OUT rail (which feeds the USB
load switch) relies on a boost converter that is not enabled. Add the
vbat, 5v_boost, and 5v_out regulator nodes to model the OR-ed power
path from the schematic, restoring USB host functionality on battery.

Patch 6 fixes the M.2 B-Key modem power supply topology on the same
board. The vcc3v4_rf regulator was incorrectly modeled as supplied by
vccin_5v (external DC). Correct it to vcc_syson per the schematic to
accurately reflect the hardware power tree.
---
Coia Prant (6):
  arm64: dts: rockchip: fix GMAC clock parents on 9Tripod X3568 v4
  arm64: dts: rockchip: fix GMAC clock parents on Graperain G3568 v2
  arm64: dts: rockchip: fix GMAC clock setup on BPI-R2 Pro
  arm64: dts: rockchip: fix GMAC clock parent on Photonicat
  arm64: dts: rockchip: fix USB OTG power on Photonicat in battery mode
  arm64: dts: rockchip: fix modem power supply topology on Photonicat

 .../dts/rockchip/rk3568-9tripod-x3568-v4.dts  |  4 +-
 .../boot/dts/rockchip/rk3568-bpi-r2-pro.dts   |  4 +-
 .../rockchip/rk3568-graperain-g3568-v2.dts    |  4 +-
 .../boot/dts/rockchip/rk3568-photonicat.dts   | 53 +++++++++++++++++--
 4 files changed, 57 insertions(+), 8 deletions(-)

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2.47.3