linux-kernel - Re: [PATCH v4 4/4] clk: qcom: lpass: Add support for LPASS clock controller for SC7180

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Date:   Tue, 21 Jul 2020 00:48:03 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Michael Turquette <mturquette@...libre.com>,
        Taniya Das <tdas@...eaurora.org>
Cc:     David Brown <david.brown@...aro.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andy Gross <agross@...nel.org>, devicetree@...r.kernel.org,
        robh@...nel.org, robh+dt@...nel.org,
        Taniya Das <tdas@...eaurora.org>
Subject: Re: [PATCH v4 4/4] clk: qcom: lpass: Add support for LPASS clock controller for SC7180

Quoting Taniya Das (2020-07-14 23:36:50)
> diff --git a/drivers/clk/qcom/lpasscorecc-sc7180.c b/drivers/clk/qcom/lpasscorecc-sc7180.c
> new file mode 100644
> index 0000000..fd8537c
> --- /dev/null
> +++ b/drivers/clk/qcom/lpasscorecc-sc7180.c
> @@ -0,0 +1,478 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2020, The Linux Foundation. All rights reserved.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/err.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/pm_clock.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/of.h>
> +#include <linux/regmap.h>
> +
> +#include <dt-bindings/clock/qcom,lpasscorecc-sc7180.h>
> +
> +#include "clk-alpha-pll.h"
> +#include "clk-branch.h"
> +#include "clk-rcg.h"
> +#include "clk-regmap.h"
> +#include "common.h"
> +#include "gdsc.h"
> +
> +enum {
> +       P_BI_TCXO,
> +       P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD,
> +       P_SLEEP_CLK,
> +};
> +
> +static struct pll_vco fabia_vco[] = {
> +       { 249600000, 2000000000, 0 },
> +};
> +
> +static const struct alpha_pll_config lpass_lpaaudio_dig_pll_config = {
> +       .l = 0x20,
> +       .alpha = 0x0,
> +       .config_ctl_val = 0x20485699,
> +       .config_ctl_hi_val = 0x00002067,
> +       .test_ctl_val = 0x40000000,
> +       .test_ctl_hi_val = 0x00000000,
> +       .user_ctl_val = 0x00005105,
> +       .user_ctl_hi_val = 0x00004805,
> +};
> +
> +static const u8 clk_alpha_pll_regs_offset[][PLL_OFF_MAX_REGS] = {
> +       [CLK_ALPHA_PLL_TYPE_FABIA] =  {
> +               [PLL_OFF_L_VAL] = 0x04,
> +               [PLL_OFF_CAL_L_VAL] = 0x8,
> +               [PLL_OFF_USER_CTL] = 0x0c,
> +               [PLL_OFF_USER_CTL_U] = 0x10,
> +               [PLL_OFF_USER_CTL_U1] = 0x14,
> +               [PLL_OFF_CONFIG_CTL] = 0x18,
> +               [PLL_OFF_CONFIG_CTL_U] = 0x1C,
> +               [PLL_OFF_CONFIG_CTL_U1] = 0x20,
> +               [PLL_OFF_TEST_CTL] = 0x24,
> +               [PLL_OFF_TEST_CTL_U] = 0x28,
> +               [PLL_OFF_STATUS] = 0x30,
> +               [PLL_OFF_OPMODE] = 0x38,
> +               [PLL_OFF_FRAC] = 0x40,
> +       },
> +};
> +
> +static struct clk_alpha_pll lpass_lpaaudio_dig_pll = {
> +       .offset = 0x1000,
> +       .vco_table = fabia_vco,
> +       .num_vco = ARRAY_SIZE(fabia_vco),
> +       .regs = clk_alpha_pll_regs_offset[CLK_ALPHA_PLL_TYPE_FABIA],
> +       .clkr = {
> +               .hw.init = &(struct clk_init_data){
> +                       .name = "lpass_lpaaudio_dig_pll",
> +                       .parent_data = &(const struct clk_parent_data){
> +                               .fw_name = "bi_tcxo",
> +                               .name = "bi_tcxo",

We don't need .name if we have .fw_name and this is a new binding/device.

> +                       },
> +                       .num_parents = 1,
> +                       .ops = &clk_alpha_pll_fabia_ops,
> +               },
> +       },
> +};
> +