[PATCH v6 0/5] i3c: Add basic HDR mode support

Frank Li
2025-10-14T16:40:22Z

Add basic HDR mode support, only support private transfer, not support
CCC command.

Update i3c framework API to allow pass down mode and extend driver callback
function.

Implement HDR transfer in svc i3c master driver.

Simplifed HDR flow is (ref i3c spec line 5514) Figure 129

<-- SDR ---> | <--- HDR
START 0x7E RnW(0) ACK CCC(ENTHDR0) T HDR-CMD(00-7f write, 80--ff read)

----> |
HDR-DATA HDR-CRC HDR-RESTART .... HDR-EXIT

Note: HDR-CMD is 16bit data, which included 7bit slave address and 8bit
read/write command.

svc hardware can auto issue SDR part.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
Changes in v6:
- remove acpi part
- collect Conor Dooley ack tags
- Link to v5: https://lore.kernel.org/r/20251007-i3c_ddr-v5-0-444184f7725e@nxp.com

Changes in v5:
- Just realized missed CC mail list devicetree@vger.kernel.org and resend
- Link to v4: https://lore.kernel.org/r/20251007-i3c_ddr-v4-0-3afea5105775@nxp.com

Changes in v4:
- use master's hdr_cap to check HDR cap.
- add mmc5603 support.
- Link to v3: https://lore.kernel.org/r/20250930-i3c_ddr-v3-0-b627dc2ef172@nxp.com

Changes in v3:
- Add new patch for change rnw to union for svc.
- Detial changes see each patch's change log.
- Link to v2: https://lore.kernel.org/r/20250924-i3c_ddr-v2-0-682a0eb32572@nxp.com

Changes in v2:
- Add sensor driver, which use HDR mode read/write data.
- change priv_xfer to i3c_xfer.
- Link to v1: https://lore.kernel.org/r/20250129-i3c_ddr-v1-0-028a7a5d4324@nxp.com

---
Frank Li (5):
i3c: Add HDR API support
i3c: master: svc: Replace bool rnw with union for HDR support
i3c: master: svc: Add basic HDR mode support
dt-bindings: trivial-devices: add MEMSIC 3-axis magnetometer
iio: magnetometer: Add mmc5633 sensor

.../devicetree/bindings/trivial-devices.yaml | 4 +
drivers/i3c/device.c | 27 +-
drivers/i3c/internals.h | 6 +-
drivers/i3c/master.c | 19 +-
drivers/i3c/master/svc-i3c-master.c | 96 +++-
drivers/iio/magnetometer/Kconfig | 12 +
drivers/iio/magnetometer/Makefile | 1 +
drivers/iio/magnetometer/mmc5633.c | 571 +++++++++++++++++++++
include/linux/i3c/device.h | 34 +-
include/linux/i3c/master.h | 4 +
10 files changed, 737 insertions(+), 37 deletions(-)
---
base-commit: 1e546ca7362028be9e96445645c95307f7092731
change-id: 20250129-i3c_ddr-b15488901eb8

Best regards,
--
Frank Li <Frank.Li@nxp.com>