Re: [PATCH v2 0/4] Enable shared SE support over I2C

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Sep 11, 2024 at 10:32:30PM +0530, Vinod Koul wrote:
> On 07-09-24, 00:44, Mukesh Kumar Savaliya wrote:
> > This Series adds support to share QUP (Qualcomm Unified peripheral)
> > based I2C SE (Serial Engine) controller between two subsystems.
> > Each subsystem should have its own dedicated GPII (General Purpose -
> > Interface Instance) acting as pipe between SE and GSI (Generic SW -
> > Interface) DMA HW engine.
> > 
> > Subsystem must acquire Lock over the SE so that it gets uninterrupted
> > control till it unlocks the SE. It also makes sure the commonly shared
> > TLMM GPIOs are not touched which can impact other subsystem or cause
> > any interruption. Generally, GPIOs are being unconfigured during
> > suspend time.
> > 
> > GSI DMA engine is capable to perform requested transfer operations
> > from any of the I2C client in a seamless way and its transparent to
> > the subsystems. Make sure to enable “qcom,shared-se” flag only while
> > enabling this feature. I2C client should add in its respective parent
> > node.
> > 
> > Example : 
> > Two clients from different SS can share an I2C SE for same slave device
> > OR their owned slave devices.
> > Assume I2C Slave EEPROM device connected with I2C controller.
> > Each client from ADSP SS and APPS Linux SS can perform i2c transactions.
> > This gets serialized by lock TRE + DMA Transfers + Unlock TRE at HW level.
> 
> Where is the rest of the series, I see only this cover letter??
> 

Something went wrong sending the series.  Here is the resend:
https://lore.kernel.org/all/20240906191438.4104329-1-quic_msavaliy@xxxxxxxxxxx/

regards,
dan carpenter





[Index of Archives]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux PCI]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux