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Message-ID: <CAAfSe-tytrgCuy1tBaZRaJmdWwsx5NF2d1V=UiC9VMUScPv-LQ@mail.gmail.com>
Date: Thu, 14 Nov 2019 15:13:50 +0800
From: Chunyan Zhang <zhang.lyra@...il.com>
To: Stephen Boyd <sboyd@...nel.org>
Cc: Chunyan Zhang <chunyan.zhang@...soc.com>,
Mark Rutland <mark.rutland@....com>,
Michael Turquette <mturquette@...libre.com>,
Rob Herring <robh+dt@...nel.org>,
linux-clk <linux-clk@...r.kernel.org>,
DTML <devicetree@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Orson Zhai <orsonzhai@...il.com>,
Baolin Wang <baolin.wang7@...il.com>
Subject: Re: [PATCH 5/5] clk: sprd: add clocks support for SC9863A
Hi Stephen,
On Thu, 14 Nov 2019 at 06:19, Stephen Boyd <sboyd@...nel.org> wrote:
>
> Quoting Chunyan Zhang (2019-10-25 04:13:38)
> >
> > Add the list of clocks for the Unisoc SC9863A, alone with clock
>
> s/alone/along/?
>
> > initialization.
> >
> > Signed-off-by: Chunyan Zhang <chunyan.zhang@...soc.com>
> > diff --git a/drivers/clk/sprd/sc9863a-clk.c b/drivers/clk/sprd/sc9863a-clk.c
> > new file mode 100644
> > index 000000000000..5369db1090f0
> > --- /dev/null
> > +++ b/drivers/clk/sprd/sc9863a-clk.c
> > @@ -0,0 +1,1711 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * Unisoc SC9863A clock driver
> > + *
> > + * Copyright (C) 2019 Unisoc, Inc.
> > + * Author: Chunyan Zhang <chunyan.zhang@...soc.com>
> > + */
> > +
> > +#include <linux/clk-provider.h>
> > +#include <linux/err.h>
> > +#include <linux/io.h>
> > +#include <linux/module.h>
> > +#include <linux/of_device.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/slab.h>
> > +
> > +#include <dt-bindings/clock/sprd,sc9863a-clk.h>
> > +
> > +#include "common.h"
> > +#include "composite.h"
> > +#include "div.h"
> > +#include "gate.h"
> > +#include "mux.h"
> > +#include "pll.h"
> > +
> > +SPRD_PLL_SC_GATE_CLK(mpll0_gate, "mpll0-gate", "ext-26m", 0x94,
> > + 0x1000, BIT(0), CLK_IGNORE_UNUSED, 0, 240);
> > +SPRD_PLL_SC_GATE_CLK(dpll0_gate, "dpll0-gate", "ext-26m", 0x98,
> > + 0x1000, BIT(0), CLK_IGNORE_UNUSED, 0, 240);
> > +SPRD_PLL_SC_GATE_CLK(lpll_gate, "lpll-gate", "ext-26m", 0x9c,
> > + 0x1000, BIT(0), CLK_IGNORE_UNUSED, 0, 240);
> > +SPRD_PLL_SC_GATE_CLK(gpll_gate, "gpll-gate", "ext-26m", 0xa8,
> > + 0x1000, BIT(0), CLK_IGNORE_UNUSED, 0, 240);
> > +SPRD_PLL_SC_GATE_CLK(dpll1_gate, "dpll1-gate", "ext-26m", 0x1dc,
> > + 0x1000, BIT(0), CLK_IGNORE_UNUSED, 0, 240);
> > +SPRD_PLL_SC_GATE_CLK(mpll1_gate, "mpll1-gate", "ext-26m", 0x1e0,
> > + 0x1000, BIT(0), CLK_IGNORE_UNUSED, 0, 240);
> > +SPRD_PLL_SC_GATE_CLK(mpll2_gate, "mpll2-gate", "ext-26m", 0x1e4,
> > + 0x1000, BIT(0), CLK_IGNORE_UNUSED, 0, 240);
> > +SPRD_PLL_SC_GATE_CLK(isppll_gate, "isppll-gate", "ext-26m", 0x1e8,
> > + 0x1000, BIT(0), CLK_IGNORE_UNUSED, 0, 240);
> > +
> > +static struct sprd_clk_common *sc9863a_pmu_gate_clks[] = {
> > + /* address base is 0x402b0000 */
> > + &mpll0_gate.common,
> > + &dpll0_gate.common,
> > + &lpll_gate.common,
> > + &gpll_gate.common,
> > + &dpll1_gate.common,
> > + &mpll1_gate.common,
> > + &mpll2_gate.common,
> > + &isppll_gate.common,
> > +};
> > +
> > +static struct clk_hw_onecell_data sc9863a_pmu_gate_hws = {
> > + .hws = {
> > + [CLK_MPLL0_GATE] = &mpll0_gate.common.hw,
> > + [CLK_DPLL0_GATE] = &dpll0_gate.common.hw,
> > + [CLK_LPLL_GATE] = &lpll_gate.common.hw,
> > + [CLK_GPLL_GATE] = &gpll_gate.common.hw,
> > + [CLK_DPLL1_GATE] = &dpll1_gate.common.hw,
> > + [CLK_MPLL1_GATE] = &mpll1_gate.common.hw,
> > + [CLK_MPLL2_GATE] = &mpll2_gate.common.hw,
> > + [CLK_ISPPLL_GATE] = &isppll_gate.common.hw,
> > + },
> > + .num = CLK_PMU_APB_NUM,
> > +};
> > +
> > +static const struct sprd_clk_desc sc9863a_pmu_gate_desc = {
> > + .clk_clks = sc9863a_pmu_gate_clks,
> > + .num_clk_clks = ARRAY_SIZE(sc9863a_pmu_gate_clks),
> > + .hw_clks = &sc9863a_pmu_gate_hws,
> > +};
> > +
> > +static const u64 itable[5] = {4, 1000000000, 1200000000,
> > + 1400000000, 1600000000};
> > +
> > +static const struct clk_bit_field f_twpll[PLL_FACT_MAX] = {
> > + { .shift = 95, .width = 1 }, /* lock_done */
> > + { .shift = 0, .width = 1 }, /* div_s */
> > + { .shift = 1, .width = 1 }, /* mod_en */
> > + { .shift = 2, .width = 1 }, /* sdm_en */
> > + { .shift = 0, .width = 0 }, /* refin */
> > + { .shift = 3, .width = 3 }, /* ibias */
> > + { .shift = 8, .width = 11 }, /* n */
> > + { .shift = 55, .width = 7 }, /* nint */
> > + { .shift = 32, .width = 23}, /* kint */
> > + { .shift = 0, .width = 0 }, /* prediv */
> > + { .shift = 0, .width = 0 }, /* postdiv */
> > +};
> > +static SPRD_PLL_WITH_ITABLE_1K(twpll_clk, "twpll", "ext-26m", 0x4,
> > + 3, itable, f_twpll, 240);
> > +static CLK_FIXED_FACTOR(twpll_768m, "twpll-768m", "twpll", 2, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_384m, "twpll-384m", "twpll", 4, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_192m, "twpll-192m", "twpll", 8, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_96m, "twpll-96m", "twpll", 16, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_48m, "twpll-48m", "twpll", 32, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_24m, "twpll-24m", "twpll", 64, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_12m, "twpll-12m", "twpll", 128, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_512m, "twpll-512m", "twpll", 3, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_256m, "twpll-256m", "twpll", 6, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_128m, "twpll-128m", "twpll", 12, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_64m, "twpll-64m", "twpll", 24, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_307m2, "twpll-307m2", "twpll", 5, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_219m4, "twpll-219m4", "twpll", 7, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_170m6, "twpll-170m6", "twpll", 9, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_153m6, "twpll-153m6", "twpll", 10, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_76m8, "twpll-76m8", "twpll", 20, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_51m2, "twpll-51m2", "twpll", 30, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_38m4, "twpll-38m4", "twpll", 40, 1, 0);
> > +static CLK_FIXED_FACTOR(twpll_19m2, "twpll-19m2", "twpll", 80, 1, 0);
> > +
> > +static const struct clk_bit_field f_lpll[PLL_FACT_MAX] = {
> > + { .shift = 95, .width = 1 }, /* lock_done */
> > + { .shift = 0, .width = 1 }, /* div_s */
> > + { .shift = 1, .width = 1 }, /* mod_en */
> > + { .shift = 2, .width = 1 }, /* sdm_en */
> > + { .shift = 0, .width = 0 }, /* refin */
> > + { .shift = 6, .width = 2 }, /* ibias */
> > + { .shift = 8, .width = 11 }, /* n */
> > + { .shift = 55, .width = 7 }, /* nint */
> > + { .shift = 32, .width = 23}, /* kint */
> > + { .shift = 0, .width = 0 }, /* prediv */
> > + { .shift = 0, .width = 0 }, /* postdiv */
> > +};
> > +static SPRD_PLL_WITH_ITABLE_1K(lpll_clk, "lpll", "lpll-gate", 0x20,
> > + 3, itable, f_lpll, 240);
> > +static CLK_FIXED_FACTOR(lpll_409m6, "lpll-409m6", "lpll", 3, 1, 0);
> > +static CLK_FIXED_FACTOR(lpll_245m76, "lpll-245m76", "lpll", 5, 1, 0);
> > +
> > +static const struct clk_bit_field f_gpll[PLL_FACT_MAX] = {
> > + { .shift = 95, .width = 1 }, /* lock_done */
> > + { .shift = 0, .width = 1 }, /* div_s */
> > + { .shift = 1, .width = 1 }, /* mod_en */
> > + { .shift = 2, .width = 1 }, /* sdm_en */
> > + { .shift = 0, .width = 0 }, /* refin */
> > + { .shift = 6, .width = 2 }, /* ibias */
> > + { .shift = 8, .width = 11 }, /* n */
> > + { .shift = 55, .width = 7 }, /* nint */
> > + { .shift = 32, .width = 23}, /* kint */
> > + { .shift = 0, .width = 0 }, /* prediv */
> > + { .shift = 80, .width = 1 }, /* postdiv */
> > +};
> > +static SPRD_PLL_WITH_ITABLE_K_FVCO(gpll_clk, "gpll", "gpll-gate", 0x38,
> > + 3, itable, f_gpll, 240,
> > + 1000, 1000, 1, 400000000);
> > +
> > +#define f_isppll f_gpll
>
> Why redefine? Please use the actual variable name where it is used.
Ok.
>
> > +static SPRD_PLL_WITH_ITABLE_1K(isppll_clk, "isppll", "isppll-gate", 0x50,
> > + 3, itable, f_isppll, 240);
> > +static CLK_FIXED_FACTOR(isppll_468m, "isppll-468m", "isppll", 2, 1, 0);
> > +
> > +static struct sprd_clk_common *sc9863a_pll_clks[] = {
> > + /* address base is 0x40353000 */
> > + &twpll_clk.common,
> > + &lpll_clk.common,
> > + &gpll_clk.common,
> > + &isppll_clk.common,
> > +};
> > +
> > +static struct clk_hw_onecell_data sc9863a_pll_hws = {
> > + .hws = {
> > + [CLK_TWPLL] = &twpll_clk.common.hw,
> > + [CLK_TWPLL_768M] = &twpll_768m.hw,
> > + [CLK_TWPLL_384M] = &twpll_384m.hw,
> > + [CLK_TWPLL_192M] = &twpll_192m.hw,
> > + [CLK_TWPLL_96M] = &twpll_96m.hw,
> > + [CLK_TWPLL_48M] = &twpll_48m.hw,
> > + [CLK_TWPLL_24M] = &twpll_24m.hw,
> > + [CLK_TWPLL_12M] = &twpll_12m.hw,
> > + [CLK_TWPLL_512M] = &twpll_512m.hw,
> > + [CLK_TWPLL_256M] = &twpll_256m.hw,
> > + [CLK_TWPLL_128M] = &twpll_128m.hw,
> > + [CLK_TWPLL_64M] = &twpll_64m.hw,
> > + [CLK_TWPLL_307M2] = &twpll_307m2.hw,
> > + [CLK_TWPLL_219M4] = &twpll_219m4.hw,
> > + [CLK_TWPLL_170M6] = &twpll_170m6.hw,
> > + [CLK_TWPLL_153M6] = &twpll_153m6.hw,
> > + [CLK_TWPLL_76M8] = &twpll_76m8.hw,
> > + [CLK_TWPLL_51M2] = &twpll_51m2.hw,
> > + [CLK_TWPLL_38M4] = &twpll_38m4.hw,
> > + [CLK_TWPLL_19M2] = &twpll_19m2.hw,
> > + [CLK_LPLL] = &lpll_clk.common.hw,
> > + [CLK_LPLL_409M6] = &lpll_409m6.hw,
> > + [CLK_LPLL_245M76] = &lpll_245m76.hw,
> > + [CLK_GPLL] = &gpll_clk.common.hw,
> > + [CLK_ISPPLL] = &isppll_clk.common.hw,
> > + [CLK_ISPPLL_468M] = &isppll_468m.hw,
> > +
> > + },
> > + .num = CLK_ANLG_PHY_G1_NUM,
> > +};
> > +
> > +static const struct sprd_clk_desc sc9863a_pll_desc = {
> > + .clk_clks = sc9863a_pll_clks,
> > + .num_clk_clks = ARRAY_SIZE(sc9863a_pll_clks),
> > + .hw_clks = &sc9863a_pll_hws,
> > +};
> > +
> > +#define f_mpll f_gpll
>
> Same comment.
>
> > +static const u64 itable_mpll[6] = {5, 1000000000, 1200000000, 1400000000,
> > + 1600000000, 1800000000};
> > +static SPRD_PLL_WITH_ITABLE_K_FVCO(mpll0_clk, "mpll0", "mpll0-gate", 0x0,
> > + 3, itable_mpll, f_mpll, 240,
> > + 1000, 1000, 1, 1000000000);
> > +static SPRD_PLL_WITH_ITABLE_K_FVCO(mpll1_clk, "mpll1", "mpll1-gate", 0x18,
> > + 3, itable_mpll, f_mpll, 240,
> > + 1000, 1000, 1, 1000000000);
> > +static SPRD_PLL_WITH_ITABLE_K_FVCO(mpll2_clk, "mpll2", "mpll2-gate", 0x30,
> > + 3, itable_mpll, f_mpll, 240,
> > + 1000, 1000, 1, 1000000000);
> > +static CLK_FIXED_FACTOR(mpll2_675m, "mpll2-675m", "mpll2", 2, 1, 0);
> > +
> > +static struct sprd_clk_common *sc9863a_mpll_clks[] = {
> > + /* address base is 0x40359000 */
> > + &mpll0_clk.common,
> > + &mpll1_clk.common,
> > + &mpll2_clk.common,
> > +};
> > +
> > +static struct clk_hw_onecell_data sc9863a_mpll_hws = {
> > + .hws = {
> > + [CLK_MPLL0] = &mpll0_clk.common.hw,
> > + [CLK_MPLL1] = &mpll1_clk.common.hw,
> > + [CLK_MPLL2] = &mpll2_clk.common.hw,
> > + [CLK_MPLL2_675M] = &mpll2_675m.hw,
> > +
> > + },
> > + .num = CLK_ANLG_PHY_G4_NUM,
> > +};
> > +
> > +static const struct sprd_clk_desc sc9863a_mpll_desc = {
> > + .clk_clks = sc9863a_mpll_clks,
> > + .num_clk_clks = ARRAY_SIZE(sc9863a_mpll_clks),
> > + .hw_clks = &sc9863a_mpll_hws,
> > +};
> > +
> > +static SPRD_SC_GATE_CLK(audio_gate, "audio-gate", "ext-26m", 0x4,
> > + 0x1000, BIT(8), CLK_IGNORE_UNUSED, 0);
> > +
> > +#define f_rpll f_lpll
>
> Same comment.
>
> > +static SPRD_PLL_WITH_ITABLE_1K(rpll_clk, "rpll", "ext-26m", 0x10,
> > + 3, itable, f_rpll, 240);
> > +
> > +static CLK_FIXED_FACTOR(rpll_390m, "rpll-390m", "rpll", 2, 1, 0);
> > +static CLK_FIXED_FACTOR(rpll_260m, "rpll-260m", "rpll", 3, 1, 0);
> > +static CLK_FIXED_FACTOR(rpll_195m, "rpll-195m", "rpll", 4, 1, 0);
> > +static CLK_FIXED_FACTOR(rpll_26m, "rpll-26m", "rpll", 30, 1, 0);
> > +
> > +static struct sprd_clk_common *sc9863a_rpll_clks[] = {
> > + /* address base is 0x4035c000 */
> > + &audio_gate.common,
> > + &rpll_clk.common,
> > +};
> > +
> > +static struct clk_hw_onecell_data sc9863a_rpll_hws = {
> > + .hws = {
> > + [CLK_AUDIO_GATE] = &audio_gate.common.hw,
> > + [CLK_RPLL] = &rpll_clk.common.hw,
> > + [CLK_RPLL_390M] = &rpll_390m.hw,
> > + [CLK_RPLL_260M] = &rpll_260m.hw,
> > + [CLK_RPLL_195M] = &rpll_195m.hw,
> > + [CLK_RPLL_26M] = &rpll_26m.hw,
> > + },
> > + .num = CLK_ANLG_PHY_G5_NUM,
> > +};
> > +
> > +static const struct sprd_clk_desc sc9863a_rpll_desc = {
> > + .clk_clks = sc9863a_rpll_clks,
> > + .num_clk_clks = ARRAY_SIZE(sc9863a_rpll_clks),
> > + .hw_clks = &sc9863a_rpll_hws,
> > +};
> > +
> > +#define f_dpll f_lpll
>
> Same comment.
>
> > +static const u64 itable_dpll[5] = {4, 1211000000, 1320000000, 1570000000,
> > + 1866000000};
> > +static SPRD_PLL_WITH_ITABLE_1K(dpll0_clk, "dpll0", "dpll0-gate", 0x0,
> > + 3, itable_dpll, f_dpll, 240);
> > +static SPRD_PLL_WITH_ITABLE_1K(dpll1_clk, "dpll1", "dpll1-gate", 0x18,
> > + 3, itable_dpll, f_dpll, 240);
> > +
> > +static CLK_FIXED_FACTOR(dpll0_933m, "dpll0-933m", "dpll0", 2, 1, 0);
> > +static CLK_FIXED_FACTOR(dpll0_622m3, "dpll0-622m3", "dpll0", 3, 1, 0);
> > +static CLK_FIXED_FACTOR(dpll1_400m, "dpll1-400m", "dpll1", 4, 1, 0);
> > +static CLK_FIXED_FACTOR(dpll1_266m7, "dpll1-266m7", "dpll1", 6, 1, 0);
> > +static CLK_FIXED_FACTOR(dpll1_123m1, "dpll1-123m1", "dpll1", 13, 1, 0);
> > +static CLK_FIXED_FACTOR(dpll1_50m, "dpll1-50m", "dpll1", 32, 1, 0);
> > +
> > +static struct sprd_clk_common *sc9863a_dpll_clks[] = {
> [...]
> > +static SPRD_COMP_CLK(core0_clk, "core0-clk", core_parents, 0xa20,
> > + 0, 3, 8, 3, 0);
> > +static SPRD_COMP_CLK(core1_clk, "core1-clk", core_parents, 0xa24,
> > + 0, 3, 8, 3, 0);
> > +static SPRD_COMP_CLK(core2_clk, "core2-clk", core_parents, 0xa28,
> > + 0, 3, 8, 3, 0);
> > +static SPRD_COMP_CLK(core3_clk, "core3-clk", core_parents, 0xa2c,
> > + 0, 3, 8, 3, 0);
> > +static SPRD_COMP_CLK(core4_clk, "core4-clk", core_parents, 0xa30,
> > + 0, 3, 8, 3, 0);
> > +static SPRD_COMP_CLK(core5_clk, "core5-clk", core_parents, 0xa34,
> > + 0, 3, 8, 3, 0);
> > +static SPRD_COMP_CLK(core6_clk, "core6-clk", core_parents, 0xa38,
> > + 0, 3, 8, 3, 0);
> > +static SPRD_COMP_CLK(core7_clk, "core7-clk", core_parents, 0xa3c,
> > + 0, 3, 8, 3, 0);
> > +static SPRD_COMP_CLK(scu_clk, "scu-clk", core_parents, 0xa40,
> > + 0, 3, 8, 3, 0);
> > +static SPRD_DIV_CLK(ace_clk, "ace-clk", "scu-clk", 0xa44,
> > + 8, 3, 0);
> > +static SPRD_DIV_CLK(axi_periph_clk, "axi-periph-clk", "scu-clk", 0xa48,
> > + 8, 3, 0);
> > +static SPRD_DIV_CLK(axi_acp_clk, "axi-acp-clk", "scu-clk", 0xa4c,
> > + 8, 3, 0);
> > +
> > +static const char * const atb_parents[] = { "ext-26m", "twpll-384m",
> > + "twpll-512m", "mpll2" };
> > +static SPRD_COMP_CLK(atb_clk, "atb-clk", atb_parents, 0xa50,
> > + 0, 2, 8, 3, 0);
> > +static SPRD_DIV_CLK(debug_apb_clk, "debug-apb-clk", "atb-clk", 0xa54,
> > + 8, 3, 0);
> > +
> > +static const char * const gic_parents[] = { "ext-26m", "twpll-153m6",
> > + "twpll-384m", "twpll-512m" };
>
> Can you use the new way of specifying clk parents instead of using these
> big string lists? That will hopefully cut down on the size of this code
> by reducing all these string lists.
Ok, need to look at the new way first.
>
> > +static SPRD_COMP_CLK(gic_clk, "gic-clk", gic_parents, 0xa58,
> > + 0, 2, 8, 3, 0);
> > +static SPRD_COMP_CLK(periph_clk, "periph-clk", gic_parents, 0xa5c,
> > + 0, 2, 8, 3, 0);
> > +
> > +static struct sprd_clk_common *sc9863a_aon_clks[] = {
> > + /* address base is 0x402d0000 */
> > + &emc_clk.common,
> > + &aon_apb.common,
> > + &adi_clk.common,
> > + &aux0_clk.common,
> > + &aux1_clk.common,
> > + &aux2_clk.common,
> > + &probe_clk.common,
> > + &pwm0_clk.common,
> > + &pwm1_clk.common,
> > + &pwm2_clk.common,
> > + &aon_thm_clk.common,
> > + &audif_clk.common,
> > + &cpu_dap_clk.common,
> > + &cpu_ts_clk.common,
> > + &djtag_tck_clk.common,
> > + &emc_ref_clk.common,
> > + &cssys_clk.common,
> > + &aon_pmu_clk.common,
> > + &pmu_26m_clk.common,
> > + &aon_tmr_clk.common,
> > + &power_cpu_clk.common,
> > + &ap_axi.common,
> > + &sdio0_2x.common,
> > + &sdio1_2x.common,
> > + &sdio2_2x.common,
> > + &emmc_2x.common,
> > + &dpu_clk.common,
> > + &dpu_dpi.common,
> > + &otg_ref_clk.common,
> > + &sdphy_apb_clk.common,
> > + &alg_io_apb_clk.common,
> > + &gpu_core.common,
> > + &gpu_soc.common,
> > + &mm_emc.common,
> > + &mm_ahb.common,
> > + &bpc_clk.common,
> > + &dcam_if_clk.common,
> > + &isp_clk.common,
> > + &jpg_clk.common,
> > + &cpp_clk.common,
> > + &sensor0_clk.common,
> > + &sensor1_clk.common,
> > + &sensor2_clk.common,
> > + &mm_vemc.common,
> > + &mm_vahb.common,
> > + &clk_vsp.common,
> > + &core0_clk.common,
> > + &core1_clk.common,
> > + &core2_clk.common,
> > + &core3_clk.common,
> > + &core4_clk.common,
> > + &core5_clk.common,
> > + &core6_clk.common,
> > + &core7_clk.common,
> > + &scu_clk.common,
> > + &ace_clk.common,
> > + &axi_periph_clk.common,
> > + &axi_acp_clk.common,
> > + &atb_clk.common,
> > + &debug_apb_clk.common,
> > + &gic_clk.common,
> > + &periph_clk.common,
> > +};
> > +
> > +static struct clk_hw_onecell_data sc9863a_aon_clk_hws = {
> > + .hws = {
> > + [CLK_13M] = &clk_13m.hw,
> > + [CLK_6M5] = &clk_6m5.hw,
> > + [CLK_4M3] = &clk_4m3.hw,
> > + [CLK_2M] = &clk_2m.hw,
> > + [CLK_250K] = &clk_250k.hw,
> > + [CLK_RCO_25M] = &rco_25m.hw,
> > + [CLK_RCO_4M] = &rco_4m.hw,
> > + [CLK_RCO_2M] = &rco_2m.hw,
> > + [CLK_EMC] = &emc_clk.common.hw,
> > + [CLK_AON_APB] = &aon_apb.common.hw,
> > + [CLK_ADI] = &adi_clk.common.hw,
> > + [CLK_AUX0] = &aux0_clk.common.hw,
> > + [CLK_AUX1] = &aux1_clk.common.hw,
> > + [CLK_AUX2] = &aux2_clk.common.hw,
> > + [CLK_PROBE] = &probe_clk.common.hw,
> > + [CLK_PWM0] = &pwm0_clk.common.hw,
> > + [CLK_PWM1] = &pwm1_clk.common.hw,
> > + [CLK_PWM2] = &pwm2_clk.common.hw,
> > + [CLK_AON_THM] = &aon_thm_clk.common.hw,
> > + [CLK_AUDIF] = &audif_clk.common.hw,
> > + [CLK_CPU_DAP] = &cpu_dap_clk.common.hw,
> > + [CLK_CPU_TS] = &cpu_ts_clk.common.hw,
> > + [CLK_DJTAG_TCK] = &djtag_tck_clk.common.hw,
> > + [CLK_EMC_REF] = &emc_ref_clk.common.hw,
> > + [CLK_CSSYS] = &cssys_clk.common.hw,
> > + [CLK_AON_PMU] = &aon_pmu_clk.common.hw,
> > + [CLK_PMU_26M] = &pmu_26m_clk.common.hw,
> > + [CLK_AON_TMR] = &aon_tmr_clk.common.hw,
> > + [CLK_POWER_CPU] = &power_cpu_clk.common.hw,
> > + [CLK_AP_AXI] = &ap_axi.common.hw,
> > + [CLK_SDIO0_2X] = &sdio0_2x.common.hw,
> > + [CLK_SDIO1_2X] = &sdio1_2x.common.hw,
> > + [CLK_SDIO2_2X] = &sdio2_2x.common.hw,
> > + [CLK_EMMC_2X] = &emmc_2x.common.hw,
> > + [CLK_DPU] = &dpu_clk.common.hw,
> > + [CLK_DPU_DPI] = &dpu_dpi.common.hw,
> > + [CLK_OTG_REF] = &otg_ref_clk.common.hw,
> > + [CLK_SDPHY_APB] = &sdphy_apb_clk.common.hw,
> > + [CLK_ALG_IO_APB] = &alg_io_apb_clk.common.hw,
> > + [CLK_GPU_CORE] = &gpu_core.common.hw,
> > + [CLK_GPU_SOC] = &gpu_soc.common.hw,
> > + [CLK_MM_EMC] = &mm_emc.common.hw,
> > + [CLK_MM_AHB] = &mm_ahb.common.hw,
> > + [CLK_BPC] = &bpc_clk.common.hw,
> > + [CLK_DCAM_IF] = &dcam_if_clk.common.hw,
> > + [CLK_ISP] = &isp_clk.common.hw,
> > + [CLK_JPG] = &jpg_clk.common.hw,
> > + [CLK_CPP] = &cpp_clk.common.hw,
> > + [CLK_SENSOR0] = &sensor0_clk.common.hw,
> > + [CLK_SENSOR1] = &sensor1_clk.common.hw,
> > + [CLK_SENSOR2] = &sensor2_clk.common.hw,
> > + [CLK_MM_VEMC] = &mm_vemc.common.hw,
> > + [CLK_MM_VAHB] = &mm_vahb.common.hw,
> > + [CLK_VSP] = &clk_vsp.common.hw,
> > + [CLK_CORE0] = &core0_clk.common.hw,
> > + [CLK_CORE1] = &core1_clk.common.hw,
> > + [CLK_CORE2] = &core2_clk.common.hw,
> > + [CLK_CORE3] = &core3_clk.common.hw,
> > + [CLK_CORE4] = &core4_clk.common.hw,
> > + [CLK_CORE5] = &core5_clk.common.hw,
> > + [CLK_CORE6] = &core6_clk.common.hw,
> > + [CLK_CORE7] = &core7_clk.common.hw,
> > + [CLK_SCU] = &scu_clk.common.hw,
> > + [CLK_ACE] = &ace_clk.common.hw,
> > + [CLK_AXI_PERIPH] = &axi_periph_clk.common.hw,
> > + [CLK_AXI_ACP] = &axi_acp_clk.common.hw,
> > + [CLK_ATB] = &atb_clk.common.hw,
> > + [CLK_DEBUG_APB] = &debug_apb_clk.common.hw,
> > + [CLK_GIC] = &gic_clk.common.hw,
> > + [CLK_PERIPH] = &periph_clk.common.hw,
> > + },
> > + .num = CLK_AON_CLK_NUM,
> > +};
> > +
> > +static const struct sprd_clk_desc sc9863a_aon_clk_desc = {
> > + .clk_clks = sc9863a_aon_clks,
> > + .num_clk_clks = ARRAY_SIZE(sc9863a_aon_clks),
> > + .hw_clks = &sc9863a_aon_clk_hws,
> > +};
> > +
> > +static SPRD_SC_GATE_CLK(otg_eb, "otg-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(4), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(dma_eb, "dma-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(5), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(ce_eb, "ce-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(6), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(nandc_eb, "nandc-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(7), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(sdio0_eb, "sdio0-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(8), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(sdio1_eb, "sdio1-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(9), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(sdio2_eb, "sdio2-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(10), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(emmc_eb, "emmc-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(11), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(emmc_32k_eb, "emmc-32k-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(27), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(sdio0_32k_eb, "sdio0-32k-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(28), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(sdio1_32k_eb, "sdio1-32k-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(29), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(sdio2_32k_eb, "sdio2-32k-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(30), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(nandc_26m_eb, "nandc-26m-eb", "ap-axi", 0x0, 0x1000,
> > + BIT(31), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(dma_eb2, "dma-eb2", "ap-axi", 0x18, 0x1000,
> > + BIT(0), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(ce_eb2, "ce-eb2", "ap-axi", 0x18, 0x1000,
> > + BIT(1), CLK_IGNORE_UNUSED, 0);
> > +
> > +static struct sprd_clk_common *sc9863a_apahb_gate_clks[] = {
> > + /* address base is 0x20e00000 */
> > + &otg_eb.common,
> > + &dma_eb.common,
> > + &ce_eb.common,
> > + &nandc_eb.common,
> > + &sdio0_eb.common,
> > + &sdio1_eb.common,
> > + &sdio2_eb.common,
> > + &emmc_eb.common,
> > + &emmc_32k_eb.common,
> > + &sdio0_32k_eb.common,
> > + &sdio1_32k_eb.common,
> > + &sdio2_32k_eb.common,
> > + &nandc_26m_eb.common,
> > + &dma_eb2.common,
> > + &ce_eb2.common,
> > +};
> > +
> > +static struct clk_hw_onecell_data sc9863a_apahb_gate_hws = {
> > + .hws = {
> > + [CLK_OTG_EB] = &otg_eb.common.hw,
> > + [CLK_DMA_EB] = &dma_eb.common.hw,
> > + [CLK_CE_EB] = &ce_eb.common.hw,
> > + [CLK_NANDC_EB] = &nandc_eb.common.hw,
> > + [CLK_SDIO0_EB] = &sdio0_eb.common.hw,
> > + [CLK_SDIO1_EB] = &sdio1_eb.common.hw,
> > + [CLK_SDIO2_EB] = &sdio2_eb.common.hw,
> > + [CLK_EMMC_EB] = &emmc_eb.common.hw,
> > + [CLK_EMMC_32K_EB] = &emmc_32k_eb.common.hw,
> > + [CLK_SDIO0_32K_EB] = &sdio0_32k_eb.common.hw,
> > + [CLK_SDIO1_32K_EB] = &sdio1_32k_eb.common.hw,
> > + [CLK_SDIO2_32K_EB] = &sdio2_32k_eb.common.hw,
> > + [CLK_NANDC_26M_EB] = &nandc_26m_eb.common.hw,
> > + [CLK_DMA_EB2] = &dma_eb2.common.hw,
> > + [CLK_CE_EB2] = &ce_eb2.common.hw,
> > + },
> > + .num = CLK_AP_AHB_GATE_NUM,
> > +};
> > +
> > +static const struct sprd_clk_desc sc9863a_apahb_gate_desc = {
> > + .clk_clks = sc9863a_apahb_gate_clks,
> > + .num_clk_clks = ARRAY_SIZE(sc9863a_apahb_gate_clks),
> > + .hw_clks = &sc9863a_apahb_gate_hws,
> > +};
> > +
> > +/* aon gate clocks */
> > +static SPRD_SC_GATE_CLK(adc_eb, "adc-eb", "aon-apb", 0x0,
> > + 0x1000, BIT(0), CLK_IGNORE_UNUSED, 0);
>
> There's a lot of CLK_IGNORE_UNUSED. Why? Can you please add a comment in
> the code about why we need this flag or remove the flag?
Ok, will have a look at which clocks don't need this flag.
>
> > +static SPRD_SC_GATE_CLK(fm_eb, "fm-eb", "aon-apb", 0x0,
> > + 0x1000, BIT(1), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(tpc_eb, "tpc-eb", "aon-apb", 0x0,
> > + 0x1000, BIT(2), CLK_IGNORE_UNUSED, 0);
> > +static SPRD_SC_GATE_CLK(gpio_eb, "gpio-eb", "aon-apb", 0x0,
> > + 0x1000, BIT(3), CLK_IGNORE_UNUSED, 0);
> [...]
> > +
> > +static const struct sprd_clk_desc sc9863a_apapb_gate_desc = {
> > + .clk_clks = sc9863a_apapb_gate,
> > + .num_clk_clks = ARRAY_SIZE(sc9863a_apapb_gate),
> > + .hw_clks = &sc9863a_apapb_gate_hws,
> > +};
> > +
> > +static const struct of_device_id sprd_sc9863a_clk_ids[] = {
> > + { .compatible = "sprd,sc9863a-ap-clk", /* 0x21500000 */
>
> What are the comments? Register addresses?
Yes, they're base address for each group of clocks, it made looking
for these clocks in spec easier, otherwise we have to look for their
base addresses in devicetree.
>
> > + .data = &sc9863a_ap_clk_desc },
> > + { .compatible = "sprd,sc9863a-pmu-gate", /* 0x402b0000 */
> > + .data = &sc9863a_pmu_gate_desc },
> > + { .compatible = "sprd,sc9863a-pll", /* 0x40353000 */
> > + .data = &sc9863a_pll_desc },
> > + { .compatible = "sprd,sc9863a-mpll", /* 0x40359000 */
> > + .data = &sc9863a_mpll_desc },
> > + { .compatible = "sprd,sc9863a-rpll", /* 0x4035c000 */
> > + .data = &sc9863a_rpll_desc },
> > + { .compatible = "sprd,sc9863a-dpll", /* 0x40363000 */
> > + .data = &sc9863a_dpll_desc },
> > + { .compatible = "sprd,sc9863a-aon-clk", /* 0x402d0000 */
> > + .data = &sc9863a_aon_clk_desc },
> > + { .compatible = "sprd,sc9863a-apahb-gate", /* 0x20e00000 */
> > + .data = &sc9863a_apahb_gate_desc },
> > + { .compatible = "sprd,sc9863a-aonapb-gate", /* 0x402e0000 */
> > + .data = &sc9863a_aonapb_gate_desc },
> > + { .compatible = "sprd,sc9863a-mm-gate", /* 0x60800000 */
> > + .data = &sc9863a_mm_gate_desc },
> > + { .compatible = "sprd,sc9863a-mm-clk", /* 0x60900000 */
> > + .data = &sc9863a_mm_clk_desc },
> > + { .compatible = "sprd,sc9863a-vspahb-gate", /* 0x62000000 */
> > + .data = &sc9863a_vspahb_gate_desc },
> > + { .compatible = "sprd,sc9863a-apapb-gate", /* 0x71300000 */
> > + .data = &sc9863a_apapb_gate_desc },
> > + { }
> > +};
> > +MODULE_DEVICE_TABLE(of, sprd_sc9863a_clk_ids);
> > +
> > +static int sc9863a_clk_probe(struct platform_device *pdev)
> > +{
> > + const struct of_device_id *match;
> > + const struct sprd_clk_desc *desc;
> > +
> > + match = of_match_node(sprd_sc9863a_clk_ids, pdev->dev.of_node);
> > + if (!match) {
> > + pr_err("%s: of_match_node() failed", __func__);
> > + return -ENODEV;
> > + }
>
> Use device_get_match_data() instead.
Ok.
>
> > +
> > + desc = match->data;
> > + sprd_clk_regmap_init(pdev, desc);
> > +
> > + return sprd_clk_probe(&pdev->dev, desc->hw_clks);
> > +}
> > +
> > +static struct platform_driver sc9863a_clk_driver = {
> > + .probe = sc9863a_clk_probe,
> > + .driver = {
> > + .name = "sc9863a-clk",
> > + .of_match_table = sprd_sc9863a_clk_ids,
> > + },
> > +};
> > +module_platform_driver(sc9863a_clk_driver);
> > +
> > +MODULE_DESCRIPTION("Spreadtrum SC9863A Clock Driver");
> > +MODULE_LICENSE("GPL v2");
> > +MODULE_ALIAS("platform:sc9863a-clk");
>
> Drop the module alias, it doesn't help from what I can recall.
Sure.
Thanks for the review and comments,
Chunyan
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