| Message ID | 20241023055118.1400286-1-Shyam-sundar.S-k@amd.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Introduce initial support for the AMD I3C (non-HCI) to DW driver | expand |
Hi Jarkko, On 10/23/2024 11:21, Shyam Sundar S K wrote: > The AMD EPYC platform design has DIMMs connected over the I3C bus, with > each DIMM containing three components: SPD, PMIC, and RCD. > > To access component-specific information within the DIMMs, such as initial > dynamic address, static address, and provisional ID, ACPI support is > necessary for the I3C core. This requires adding ACPI binding to the > dw-i3c-master driver and retrieving slave information from the AMD ASL. > > Currently, the code is closely tied to dt-bindings. This initial set aims > to decouple some of these bindings by adding the AMD-specific _HID, > enabling the current driver to support ACPI-enabled x86 systems. > > In this series, support for following features has been added. > - X86/ACPI support to i3c core > - Support for SETAASA CCC command > - Add routines to plugin a SPD device to the i3c bus > - Workaround for AMD hardware > - Add dw-i3c-master driver with ACPI bindings > > Any feedback on this series, please? Thanks, Shyam > v2: > ---- > - Address LKP reports issues > > Shyam Sundar S K (6): > i3c: dw: Add support for AMDI0015 ACPI ID > i3c: dw: Use IRQF_SHARED flag for dw-i3c-master > i3c: master: Add ACPI support to i3c subsystem > i3c: master: Add a routine to include the I3C SPD device > i3c: master: Add support for SETAASA CCC > i3c: dw: Add quirk to address OD/PP timing issue on AMD platform > > drivers/i3c/internals.h | 2 + > drivers/i3c/master.c | 157 ++++++++++++++++++++++++++++- > drivers/i3c/master/dw-i3c-master.c | 44 +++++++- > drivers/i3c/master/dw-i3c-master.h | 1 + > include/linux/i3c/ccc.h | 1 + > include/linux/i3c/master.h | 2 + > 6 files changed, 205 insertions(+), 2 deletions(-) >
On 10/29/24 5:15 PM, Shyam Sundar S K wrote: > Hi Jarkko, > > On 10/23/2024 11:21, Shyam Sundar S K wrote: >> The AMD EPYC platform design has DIMMs connected over the I3C bus, with >> each DIMM containing three components: SPD, PMIC, and RCD. >> >> To access component-specific information within the DIMMs, such as initial >> dynamic address, static address, and provisional ID, ACPI support is >> necessary for the I3C core. This requires adding ACPI binding to the >> dw-i3c-master driver and retrieving slave information from the AMD ASL. >> >> Currently, the code is closely tied to dt-bindings. This initial set aims >> to decouple some of these bindings by adding the AMD-specific _HID, >> enabling the current driver to support ACPI-enabled x86 systems. >> >> In this series, support for following features has been added. >> - X86/ACPI support to i3c core >> - Support for SETAASA CCC command >> - Add routines to plugin a SPD device to the i3c bus >> - Workaround for AMD hardware >> - Add dw-i3c-master driver with ACPI bindings >> >> > > Any feedback on this series, please? > Sorry, I thought I was accidentally CC'ed to the series :-) Since I went now reading the series I'll some comments.