linux-kernel - Re: [PATCH v3 07/16] phy: qcom-qusb2: Add support for different register layouts

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Date:   Tue, 12 Dec 2017 14:21:52 +0530
From:   Manu Gautam <mgautam@...eaurora.org>
To:     Vivek Gautam <vivek.gautam@...eaurora.org>,
        Kishon Vijay Abraham I <kishon@...com>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        "open list:GENERIC PHY FRAMEWORK" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 07/16] phy: qcom-qusb2: Add support for different
 register layouts

Hi Vivek,


On 12/5/2017 3:53 PM, Vivek Gautam wrote:
>
>
> On 11/21/2017 02:53 PM, Manu Gautam wrote:
>> New version of QUSB2 PHY has some registers offset changed.
>> Add support to have register layout for a target and update
>> the same in phy_configuration.
>>
>> Signed-off-by: Manu Gautam <mgautam@...eaurora.org>
>> ---
>>   drivers/phy/qualcomm/phy-qcom-qusb2.c | 131 ++++++++++++++++++++++++----------
>>   1 file changed, 95 insertions(+), 36 deletions(-)
>>
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c
>> index 4a5b2a1..c0c5358 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c
>> +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c
> [snip]
>>   /*
>> @@ -198,7 +249,8 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy)
>
> We need to add following change to qusb2_phy_set_tune2_param()
> since we have register layout now.
>
> @@ -333,7 +334,7 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy)
>         }
>
>         /* Fused TUNE2 value is the higher nibble only */
> -       qusb2_setbits(qphy->base, QUSB2PHY_PORT_TUNE2, val[0] << 0x4);
> +       qusb2_setbits(qphy->base, cfg->regs[QUSB2PHY_PORT_TUNE2], val[0] << 0x4);

Thanks for catching this. Actually on qusb-v2 PHY, fused value is used to update
TUNE1 instead of TUNE2 register. I will make changes accordingly.

>  }
>
> regards
> Vivek
>

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