[PATCH] bus: mhi: Make firmware image optional for controller

[PATCH] bus: mhi: Make firmware image optional for controller

[Bhaumik Bhatt]

Some controllers can opt to not have MHI download a firmware
image to have the device bootup and can find the device in a
pass through execution environment, ready to go. Thus, MHI
controllers for those devices do not need fw_image defined.
Make it optional to accommodate different bootup modes.

Suggested-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
---
 include/linux/mhi.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index 56c4c52..838a3c4 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -296,7 +296,7 @@ struct mhi_controller_config {
  * @wake_db: MHI WAKE doorbell register address
  * @iova_start: IOMMU starting address for data (required)
  * @iova_stop: IOMMU stop address for data (required)
- * @fw_image: Firmware image name for normal booting (required)
+ * @fw_image: Firmware image name for normal booting (optional)
  * @edl_image: Firmware image name for emergency download mode (optional)
  * @rddm_size: RAM dump size that host should allocate for debugging purpose
  * @sbl_size: SBL image size downloaded through BHIe (optional)
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH] bus: mhi: Make firmware image optional for controller

[Jeffrey Hugo]

On 3/9/2021 11:46 AM, Bhaumik Bhatt wrote:
> Some controllers can opt to not have MHI download a firmware
> image to have the device bootup and can find the device in a
> pass through execution environment, ready to go. Thus, MHI
> controllers for those devices do not need fw_image defined.
> Make it optional to accommodate different bootup modes.
> 
> Suggested-by: Loic Poulain <loic.poulain@linaro.org>
> Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>


Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>

-- 
Jeffrey Hugo
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.

Re: [PATCH] bus: mhi: Make firmware image optional for controller

[Manivannan Sadhasivam]

On Tue, Mar 09, 2021 at 10:46:35AM -0800, Bhaumik Bhatt wrote:
> Some controllers can opt to not have MHI download a firmware
> image to have the device bootup and can find the device in a
> pass through execution environment, ready to go. Thus, MHI
> controllers for those devices do not need fw_image defined.
> Make it optional to accommodate different bootup modes.
> 
> Suggested-by: Loic Poulain <loic.poulain@linaro.org>
> Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

Thanks,
Mani

> ---
>  include/linux/mhi.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/mhi.h b/include/linux/mhi.h
> index 56c4c52..838a3c4 100644
> --- a/include/linux/mhi.h
> +++ b/include/linux/mhi.h
> @@ -296,7 +296,7 @@ struct mhi_controller_config {
>   * @wake_db: MHI WAKE doorbell register address
>   * @iova_start: IOMMU starting address for data (required)
>   * @iova_stop: IOMMU stop address for data (required)
> - * @fw_image: Firmware image name for normal booting (required)
> + * @fw_image: Firmware image name for normal booting (optional)
>   * @edl_image: Firmware image name for emergency download mode (optional)
>   * @rddm_size: RAM dump size that host should allocate for debugging purpose
>   * @sbl_size: SBL image size downloaded through BHIe (optional)
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
> 

Re: [PATCH] bus: mhi: Make firmware image optional for controller

[Manivannan Sadhasivam]

On Tue, Mar 09, 2021 at 10:46:35AM -0800, Bhaumik Bhatt wrote:
> Some controllers can opt to not have MHI download a firmware
> image to have the device bootup and can find the device in a
> pass through execution environment, ready to go. Thus, MHI
> controllers for those devices do not need fw_image defined.
> Make it optional to accommodate different bootup modes.
> 
> Suggested-by: Loic Poulain <loic.poulain@linaro.org>
> Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>

Applied to mhi-next!

Thanks,
Mani

> ---
>  include/linux/mhi.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/mhi.h b/include/linux/mhi.h
> index 56c4c52..838a3c4 100644
> --- a/include/linux/mhi.h
> +++ b/include/linux/mhi.h
> @@ -296,7 +296,7 @@ struct mhi_controller_config {
>   * @wake_db: MHI WAKE doorbell register address
>   * @iova_start: IOMMU starting address for data (required)
>   * @iova_stop: IOMMU stop address for data (required)
> - * @fw_image: Firmware image name for normal booting (required)
> + * @fw_image: Firmware image name for normal booting (optional)
>   * @edl_image: Firmware image name for emergency download mode (optional)
>   * @rddm_size: RAM dump size that host should allocate for debugging purpose
>   * @sbl_size: SBL image size downloaded through BHIe (optional)
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
> 

Re: [PATCH] bus: mhi: Make firmware image optional for controller

[patchwork-bot+linux-arm-msm]

Hello:

This patch was applied to qcom/linux.git (refs/heads/for-next):

On Tue,  9 Mar 2021 10:46:35 -0800 you wrote:
> Some controllers can opt to not have MHI download a firmware
> image to have the device bootup and can find the device in a
> pass through execution environment, ready to go. Thus, MHI
> controllers for those devices do not need fw_image defined.
> Make it optional to accommodate different bootup modes.
> 
> Suggested-by: Loic Poulain <loic.poulain@linaro.org>
> Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
> 
> [...]

Here is the summary with links:
  - bus: mhi: Make firmware image optional for controller
    https://git.kernel.org/qcom/c/4d5f52838d11

You are awesome, thank you!
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