Re: [PATCH v3 0/3] Polling for MHI ready

Manivannan Sadhasivam
2021-02-24T09:28:38Z

On Tue, Feb 23, 2021 at 07:44:27PM -0800, Bhaumik Bhatt wrote:
> v3:
> -Removed config changes that crept in in the first patch
>
> v2:
> -Addressed review comments
> -Introduce new patch for to use controller defined read_reg() for polling
> -Add usage in RDDM download panic path as well
>
> Use polling instead of interrupt driven approach to wait for MHI ready state.
>
> In certain devices, it is likely that there is no incoming MHI
> interrupt for a transition to MHI READY state. One such example
> is the move from Pass Through to an SBL or AMSS execution
> environment. In order to facilitate faster bootup times as there
> is no need to wait until timeout_ms completes, MHI host can poll
> every 25 milliseconds to check if device has entered MHI READY
> until a maximum timeout of twice the timeout_ms is reached.
>
> This patch series has been tested on an arm64 device.
>

So this is a spinoff from "Execution environment updates from MHI"?
Please mention it in the cover letter and which one is the latest.

Thanks,
Mani

> Bhaumik Bhatt (3):
> bus: mhi: core: Introduce internal register poll helper function
> bus: mhi: core: Move to polling method to wait for MHI ready
> bus: mhi: core: Use poll register read API for RDDM download
>
> drivers/bus/mhi/core/boot.c | 20 ++++++--------------
> drivers/bus/mhi/core/internal.h | 3 +++
> drivers/bus/mhi/core/main.c | 23 +++++++++++++++++++++++
> drivers/bus/mhi/core/pm.c | 31 ++++++++++++++-----------------
> 4 files changed, 46 insertions(+), 31 deletions(-)
>
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