[0/8] qcom: Refactor sa8775p/qcs9100 based ride boards

This series redefine DT structure for sa8775p/qcs9100 based ride/ride-r3
boards by introducing SOM for sa8775p, qcs9100.
It also introduces ethernet dtsi with two variants of capabilities.
It also refactor all common parts of ride boards to ride-common dtsi.

Below are detailed explaination on each type of HW variants supported:

# Ride HW information
-----------------------------
Ride is a modular hardware system with several smaller daughter cards
connected to single backplane board and each daughter card is stacked on
top of each other. I will try to explain each daughter card with HW
components and how it is connected to construct the ride-hw.

Backplane board:
  - It contains an MCU (Aurix TC397), CAN/LIN transceiver,
    Audio/GNSS/IMU-I2C signals, Fan header
  - It holds & connects all the daughter cards.

SOC card:
  - It contains:
    - SOM:
      - One of QCS9100M/QAM8775p SOM.
      - Each SOM is composed of either qcs9100/sa8775p SOC,
        along with DDR & PMICs.
      - Each SOM can be mounted to same SOC-daughter card of ride-hw.
    - In addition to SOM, it also has
      - 4x UART, 2x USB 3.1 & 1x USB 2.0
      - Memory: 1x OSPI, 2x UFS-3.1
      - Debug: JTAG/QDSS header
      - PCIe0, PCIe1 & Display signals
      - Reset button
  - It is connected to backplain board via B2B connector.

Display card:
  - It contains:
    - 4 eDP ports & 2 DSI-DP bridge
    - I2C GPIO expander & I2C switch
  - It is connected to SOC-card via B2B connector.

Camera card:
  - It contains:
    - 4 Quad DE-serializer, each supporting 4 MIPI CSI inputs
    - Total upto 16 Cameras ports are supported.
  - It is connected to backplain board via B2B connector.

Ethernet card:
  - There are two variants of ethernet card each with different capabilities:
    - [Ethernet-v1] card contains:
      - 2x 1G RGMII phy, 2x 1G SGMII phy(enabled currently)
      - Total 4 phy supported, only 2 phy are enabled and it is used in ride.
    - [Ethernet-v2] card contains:
      - 2x 1G RGMII phy, 2x 2.5G HSGMII(enabled currently) & 10G PCIe
        based MAC+PHY controller
      - Total 5 phy supported, only 2 phy are enabled and it is used
        in ride-r3.
  - Either [Ethernet-v1] or [Ethernet-v2] is connected to backplain
    board via B2B connector.

PCIe card:
  - It contains:
    - PCIe connections to SOC-card
    - NVME, 2x WLBT module QCA6696/QCA6698 (Wi-Fi & bluetooth solution)
      & GNSS module
  - It is connected to backplain board via B2B connector & PCIe signals
    are connected to SOC card via flyover cables.

Sensor Card:
  - It contains 3-Axix compass & 6-Axis 3D IMU (accel/gyro) module which
    are communicating via I2C
  - It is connected to backplain board via B2B connector.

Front panel card:
  - It does not contain any active circuitry, only ports are available
    - Audio-in/out ports
    - USB hub ports
    - CAN/LIN ports
    - 12V power off switch
  - It is connected to backplain board via ribbon cable.


Considering outlined h/w description, following are ride configuration
variation each platform supporting:

Between qcs9100 & sa8775p ride/ride-r3 boards, SOM is changing; And between
ride & ride-r3 ethernet is changing.
Excluding these differences all other cards i.e SOC, display, camera,
PCIe, sensor, front & backplain are same and are refactored in ride-common.
If any variant of these cards comes up in future we need to refactor
ride-common accordingly.

Since we don't have a document yet which formally describes qcs9100 ride
board with [Ethernet-v1] card, I am removing the board and we can re-enable
after complete documentation is available.

Considering current outlines of all daughter cards, following defines
ride/ride-r3 variant boards:
  - sa8775p ride    : QAM8775p SOM + [Ethernet-v1] + other daughter cards
  - sa8775p ride-r3 : QAM8775p SOM + [Ethernet-v2] + other daughter cards
  - qcs9100 ride-r3 : QCS9100M SOM + [Ethernet-v2] + other daughter cards

Below is the pictorial diagram for updated DT structure depicting all our HW.
- SOM dtsi:
  - qam8775p-som.dtsi specifying sa8775p based SOM having SOC, PMICs,
    Memory-map.
  - qcs9100-som.dtsi specifying QCS9100M based SOM having SOC, PMICs, Memory-map
    updates.
- sa8775p-ride-common.dtsi specifying ride common daughter cards for all ride
  boards. This include SOC-card, display, camera, PCIe, sensor, front &
  backplain cards.
- Ethernet variants dtsi:
  - sa8775p-ride-ethernet-88ea1512.dtsi specifying ethernet card which
    uses 2x 1G - SGMII (Marvell 88EA1512-B2) phy in Main-domain
  - sa8775p-ride-ethernet-aqr115c.dtsi specifying ethernet card which
    uses 2x 2.5G - HSGMII (Marvell AQR115c) phy in Main-domain

+---------------------------------------------------------------------------------------------------+
|                                                                                                   |
|                        sa8775p.dtsi                                                               |
|                             |                                                                     |
|                 +-----------------------+                                                         |
|                 |                       |                                                         |
|                 v                       v                                                         |
|          qam8775p-som.dtsi        qcs9100-som.dtsi                                                |
|                 |                       |                                                         |
|                 v                       v                                                         |
|              (AUTO)                   (IOT)                                                       |
|                 |                       |                                                         |
|                 |                       |                                                         |
|                 |                       |                                                         |
|                 | +-----------------------+---------------< sa8775p-ride-ethernet-aqr115c.dtsi    |
|                 | |                     | |                                                       |
|                 | | +-----------------------+----------+--< sa8775p-ride-common.dtsi              |
|                 | | |                   | | |          |                                          |
|       +---------+ | |                   | | |          |                                          |
|       |         | | |                   | | |          |                                          |
|       |         v v v                   v v v          |                                          |
|       |   sa8775p-ride-r3.dts    qcs9100-ride-r3.dts   |                                          |
|       |                                                |                                          |
|       | +----------------------------------------------+                                          |
|       | |                                                                                         |
|       | | +------------------------------------------------< sa8775p-ride-ethernet-88ea1512.dtsi  |
|       | | |                                                                                       |
|       v v v                                                                                       |
| sa8775p-ride.dts                                                                                  |
|                                                                                                   |
+---------------------------------------------------------------------------------------------------+

This series provides code refactoring changes for sa8775p/qcs9100
ride/ride-r3 boards from previous discussion [1] excluding any new
features or boards.

No functional impact, and it is verified with comparing decompiled DTB
(dtx_diff and fdtdump+diff).
The only difference is that *-som compatibility has been added in all boards
and qcs9100-ride board is removed.

[1] https://lore.kernel.org/all/20241229152332.3068172-1-quic_wasimn@quicinc.com/

---

Wasim Nazir (8):
  dt-bindings: arm: qcom: Remove bindings for qcs9100 ride
  arm64: dts: qcom: qcs9100: Remove qcs9100 ride board
  arm64: dts: qcom: sa8775p: Add ethernet card for ride & ride-r3
  arm64: dts: qcom: sa8775p: Create ride common file
  dt-bindings: arm: qcom: Add bindings for qam8775p SOM
  arm64: dts: qcom: sa8775p: Introduce QAM8775p SOM
  dt-bindings: arm: qcom: Add bindings for QCS9100M SOM
  arm64: dts: qcom: qcs9100: Introduce QCS9100M SOM

 .../devicetree/bindings/arm/qcom.yaml         |   3 +-
 arch/arm64/boot/dts/qcom/Makefile             |   1 -
 arch/arm64/boot/dts/qcom/qam8775p-som.dtsi    |   9 +
 arch/arm64/boot/dts/qcom/qcs9100-ride-r3.dts  |  10 +-
 arch/arm64/boot/dts/qcom/qcs9100-ride.dts     |  11 -
 arch/arm64/boot/dts/qcom/qcs9100-som.dtsi     |   9 +
 ...75p-ride.dtsi => sa8775p-ride-common.dtsi} | 169 +--------------
 .../qcom/sa8775p-ride-ethernet-88ea1512.dtsi  | 205 ++++++++++++++++++
 .../qcom/sa8775p-ride-ethernet-aqr115c.dtsi   | 205 ++++++++++++++++++
 arch/arm64/boot/dts/qcom/sa8775p-ride-r3.dts  |  42 +---
 arch/arm64/boot/dts/qcom/sa8775p-ride.dts     |  42 +---
 11 files changed, 450 insertions(+), 256 deletions(-)
 create mode 100644 arch/arm64/boot/dts/qcom/qam8775p-som.dtsi
 delete mode 100644 arch/arm64/boot/dts/qcom/qcs9100-ride.dts
 create mode 100644 arch/arm64/boot/dts/qcom/qcs9100-som.dtsi
 rename arch/arm64/boot/dts/qcom/{sa8775p-ride.dtsi => sa8775p-ride-common.dtsi} (86%)
 create mode 100644 arch/arm64/boot/dts/qcom/sa8775p-ride-ethernet-88ea1512.dtsi
 create mode 100644 arch/arm64/boot/dts/qcom/sa8775p-ride-ethernet-aqr115c.dtsi


base-commit: 33035b665157558254b3c21c3f049fd728e72368
--
2.49.0