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SubjectRe: [PATCH v3 1/5] phy: qcom-qusb2: Add QUSB2 PHY support for SC7180
Hi,

On Fri, Jan 10, 2020 at 05:48:15PM +0530, Sandeep Maheswaram wrote:
> Using generic cfg table for QUSB2 V2 PHY.
> Add QUSB2 PHY config data and compatible for SC7180.
>
> Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
> ---
> drivers/phy/qualcomm/phy-qcom-qusb2.c | 22 ++++++++++++++--------
> 1 file changed, 14 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c
> index bf94a52..db4ae26 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c
> @@ -1,6 +1,6 @@
> // SPDX-License-Identifier: GPL-2.0
> /*
> - * Copyright (c) 2017, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2017, 2019, The Linux Foundation. All rights reserved.
> */
>
> #include <linux/clk.h>
> @@ -177,7 +177,7 @@ static const struct qusb2_phy_init_tbl msm8998_init_tbl[] = {
> QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_DIGITAL_TIMERS_TWO, 0x19),
> };
>
> -static const unsigned int sdm845_regs_layout[] = {
> +static const unsigned int qusb2_v2_regs_layout[] = {
> [QUSB2PHY_PLL_CORE_INPUT_OVERRIDE] = 0xa8,
> [QUSB2PHY_PLL_STATUS] = 0x1a0,
> [QUSB2PHY_PORT_TUNE1] = 0x240,
> @@ -191,7 +191,7 @@ static const unsigned int sdm845_regs_layout[] = {
> [QUSB2PHY_INTR_CTRL] = 0x230,
> };
>
> -static const struct qusb2_phy_init_tbl sdm845_init_tbl[] = {
> +static const struct qusb2_phy_init_tbl qusb2_v2_init_tbl[] = {
> QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_ANALOG_CONTROLS_TWO, 0x03),
> QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_CLOCK_INVERTERS, 0x7c),
> QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_CMODE, 0x80),
> @@ -258,10 +258,10 @@ static const struct qusb2_phy_cfg msm8998_phy_cfg = {
> .update_tune1_with_efuse = true,
> };
>
> -static const struct qusb2_phy_cfg sdm845_phy_cfg = {
> - .tbl = sdm845_init_tbl,
> - .tbl_num = ARRAY_SIZE(sdm845_init_tbl),
> - .regs = sdm845_regs_layout,
> +static const struct qusb2_phy_cfg qusb2_v2_phy_cfg = {
> + .tbl = qusb2_v2_init_tbl,
> + .tbl_num = ARRAY_SIZE(qusb2_v2_init_tbl),
> + .regs = qusb2_v2_regs_layout,
>
> .disable_ctrl = (PWR_CTRL1_VREF_SUPPLY_TRIM | PWR_CTRL1_CLAMP_N_EN |
> POWER_DOWN),
> @@ -774,8 +774,14 @@ static const struct of_device_id qusb2_phy_of_match_table[] = {
> .compatible = "qcom,msm8998-qusb2-phy",
> .data = &msm8998_phy_cfg,
> }, {
> + .compatible = "qcom,sc7180-qusb2-phy",
> + .data = &qusb2_v2_phy_cfg,
> + }, {

I don't think you need the new entry as of now, since sc7180 just uses the
standard v2 configuration. DT compatible entries should look like this:

{
compatible = "qcom,sc7180-qusb2-phy", "qcom,qusb2-v2-phy";
...
}

hence the correct configuration is selected, even without a specific entry
for 'qcom,sc7180-qusb2-phy'.


> .compatible = "qcom,sdm845-qusb2-phy",
> - .data = &sdm845_phy_cfg,
> + .data = &qusb2_v2_phy_cfg,
> + }, {

think this can also be removed if you add 'qcom,qusb2-v2-phy' to the list
of compatible strings of nodes 'usb_1_hsphy' and 'usb_2_hsphy' in
arch/arm64/boot/dts/qcom/sdm845.dtsi.


> + .compatible = "qcom,qusb2-v2-phy",
> + .data = &qusb2_v2_phy_cfg,
> },
> { },
> };

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