linux-kernel - Re: [PATCH v1 3/3] phy: qcom-qusb2: Add configuration for SM4250 and SM6115

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Date:   Fri, 25 Jun 2021 13:38:46 +0300
From:   Iskren Chernev <iskren.chernev@...il.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Manu Gautam <mgautam@...eaurora.org>,
        Rob Herring <robh+dt@...nel.org>,
        Vinod Koul <vkoul@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-phy@...ts.infradead.org, linux-usb@...r.kernel.org,
        phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH v1 3/3] phy: qcom-qusb2: Add configuration for SM4250 and
 SM6115



On 6/23/21 6:37 AM, Bjorn Andersson wrote:
> On Tue 22 Jun 15:32 CDT 2021, Iskren Chernev wrote:
> 
>> The SM4250 and SM6115 uses the same register layout as MSM8996, but the
>> tune sequence is a bit different.
>>
> 
> Didn't review the initialization sequence, but it's different from the
> existing ones so adding a new compatible and init_tbl seems to be the
> right choice.

Here is the init sequence I'm using [1]

[1] https://github.com/OnePlusOSS/android_kernel_oneplus_sm4250/blob/oneplus/SM4250_Q_10.0/arch/arm64/boot/dts/vendor/20882/bengal-qrd.dtsi#L130

> Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> 
> Regards,
> Bjorn
> 
>> Signed-off-by: Iskren Chernev <iskren.chernev@...il.com>
>> ---
>>  drivers/phy/qualcomm/phy-qcom-qusb2.c | 34 +++++++++++++++++++++++++++
>>  1 file changed, 34 insertions(+)
>>
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c
>> index 8f1bf7e2186b..3c1d3b71c825 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c
>> +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c
>> @@ -219,6 +219,22 @@ static const struct qusb2_phy_init_tbl msm8998_init_tbl[] = {
>>  	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_DIGITAL_TIMERS_TWO, 0x19),
>>  };
>>  
>> +static const struct qusb2_phy_init_tbl sm6115_init_tbl[] = {
>> +	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE1, 0xf8),
>> +	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE2, 0x53),
>> +	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE3, 0x81),
>> +	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE4, 0x17),
>> +
>> +	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_TUNE, 0x30),
>> +	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_USER_CTL1, 0x79),
>> +	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_USER_CTL2, 0x21),
>> +
>> +	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TEST2, 0x14),
>> +
>> +	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_AUTOPGM_CTL1, 0x9f),
>> +	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_PWR_CTRL, 0x00),
>> +};
>> +
>>  static const unsigned int qusb2_v2_regs_layout[] = {
>>  	[QUSB2PHY_PLL_CORE_INPUT_OVERRIDE] = 0xa8,
>>  	[QUSB2PHY_PLL_STATUS]		= 0x1a0,
>> @@ -342,6 +358,18 @@ static const struct qusb2_phy_cfg sdm660_phy_cfg = {
>>  	.autoresume_en	 = BIT(3),
>>  };
>>  
>> +static const struct qusb2_phy_cfg sm6115_phy_cfg = {
>> +	.tbl		= sm6115_init_tbl,
>> +	.tbl_num	= ARRAY_SIZE(sm6115_init_tbl),
>> +	.regs		= msm8996_regs_layout,
>> +
>> +	.has_pll_test	= true,
>> +	.se_clk_scheme_default = true,
>> +	.disable_ctrl	= (CLAMP_N_EN | FREEZIO_N | POWER_DOWN),
>> +	.mask_core_ready = PLL_LOCKED,
>> +	.autoresume_en	 = BIT(3),
>> +};
>> +
>>  static const char * const qusb2_phy_vreg_names[] = {
>>  	"vdda-pll", "vdda-phy-dpdm",
>>  };
>> @@ -888,6 +916,12 @@ static const struct of_device_id qusb2_phy_of_match_table[] = {
>>  	}, {
>>  		.compatible	= "qcom,sdm660-qusb2-phy",
>>  		.data		= &sdm660_phy_cfg,
>> +	}, {
>> +		.compatible	= "qcom,sm4250-qusb2-phy",
>> +		.data		= &sm6115_phy_cfg,
>> +	}, {
>> +		.compatible	= "qcom,sm6115-qusb2-phy",
>> +		.data		= &sm6115_phy_cfg,
>>  	}, {
>>  		/*
>>  		 * Deprecated. Only here to support legacy device
>> -- 
>> 2.31.1
>>