linux-kernel - Re: [PATCH] mhi: pci_generic: add support for sc8280xp-crd SDX55 variant

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Message-ID: <20221101114258.GB54667@thinkpad>
Date:   Tue, 1 Nov 2022 17:12:58 +0530
From:   Manivannan Sadhasivam <mani@...nel.org>
To:     Johan Hovold <johan+linaro@...nel.org>
Cc:     Manivannan Sadhasivam <mani@...nel.org>,
        Hemant Kumar <quic_hemantk@...cinc.com>, mhi@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mhi: pci_generic: add support for sc8280xp-crd SDX55
 variant

On Mon, Oct 31, 2022 at 09:34:29AM +0100, Johan Hovold wrote:
> The SC8280XP Compute Reference Design (CRD) has an on-PCB SDX55 modem
> which uses MBIM.
> 
> The exact channel configuration is not known but the Foxconn SDX55
> configuration allows the modem to be used so reuse that one for now.
> 
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
> ---
>  drivers/bus/mhi/host/pci_generic.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
> index caa4ce28cf9e..f9f4345d472d 100644
> --- a/drivers/bus/mhi/host/pci_generic.c
> +++ b/drivers/bus/mhi/host/pci_generic.c
> @@ -542,6 +542,9 @@ static const struct mhi_pci_dev_info mhi_telit_fn990_info = {
>  static const struct pci_device_id mhi_pci_id_table[] = {
>  	{ PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0304),
>  		.driver_data = (kernel_ulong_t) &mhi_qcom_sdx24_info },
> +	/* SC8280XP-CRD (sdx55) */

Platform device name is not needed.

> +	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0306, PCI_VENDOR_ID_QCOM, 0x010c),

Sub ID looks wierd. Did you test with mhi_qcom_sdx55_info? If it didn't
work, what was the issue?

Thanks,
Mani

> +		.driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
>  	/* EM919x (sdx55), use the same vid:pid as qcom-sdx55m */
>  	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0306, 0x18d7, 0x0200),
>  		.driver_data = (kernel_ulong_t) &mhi_sierra_em919x_info },
> -- 
> 2.37.3
> 
> 

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