[PATCH v6 0/4] mailbox: imx: support i.MX95 ELE/V2X MU

[Peng Fan (OSS)]

- Add dt-bindings
- i.MX95 ELE/V2X use same register layout as i.MX8ULP S4 MU, but
  the TR/RR num is different. To make code reusable and not add too much
  macros, add runtime detect number of TR and RR by reading PAR_OFF
  registers.
- Add i.MX95 ELE/V2X MU entry in driver

Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
Changes in v6:
- Drop node labels and add Conor's R-b
- Link to v5: https://lore.kernel.org/r/20240126-imx-mailbox-v5-0-7ff3a3d53529@xxxxxxx

Changes in v5:
- Per Conor, add restriction to sram property.
- Since i.MX95 MU has SRAM, we may not see it is compatible with
i.MX8ULP MU, so drop the fallback compatible
- Add R-b for patch 2&3
- Link to v4: https://lore.kernel.org/r/20240125-imx-mailbox-v4-0-800be5383c20@xxxxxxx

Changes in v4:
- Address dt-binding comments in V2 from Krzysztof
- Link to v3: https://lore.kernel.org/r/20240123-imx-mailbox-v3-0-ed932945e0bf@xxxxxxx

Changes in v3:
- Following dts coding style Per Krzysztof
- Add return type for init function, patch 2 is new
- Check return value when tr/rr is larger than 4 and return error.
- Link to v2: https://lore.kernel.org/r/20240122-imx-mailbox-v2-0-7b3c80333b92@xxxxxxx

Changes in v2:
- Support sram property and add example
- Populate the sram node in driver
- Link to v1: https://lore.kernel.org/r/20240122-imx-mailbox-v1-0-81413f655210@xxxxxxx

---
Peng Fan (4):
      dt-bindings: mailbox: fsl,mu: add i.MX95 Generic/ELE/V2X MU compatible
      mailbox: imx: support return value of init
      mailbox: imx: get RR/TR registers num from Parameter register
      mailbox: imx: support i.MX95 ELE/V2X MU

 .../devicetree/bindings/mailbox/fsl,mu.yaml        | 58 +++++++++++++-
 drivers/mailbox/imx-mailbox.c                      | 88 ++++++++++++++++------
 2 files changed, 123 insertions(+), 23 deletions(-)
---
base-commit: ad5c60d66016e544c51ed98635a74073f761f45d
change-id: 20240122-imx-mailbox-243021d12030

Best regards,
-- 
Peng Fan <peng.fan@xxxxxxx>