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Sun, 14 Jul 2024 06:55:13 -0700 (PDT) Received: from [192.168.50.4] ([82.78.167.171]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3680daccc55sm3898648f8f.50.2024.07.14.06.55.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 14 Jul 2024 06:55:13 -0700 (PDT) Message-ID: Date: Sun, 14 Jul 2024 16:55:11 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 13/27] clk: at91: sam9x7: add sam9x7 pmc driver Content-Language: en-US To: Varshini Rajendran , mturquette@baylibre.com, sboyd@kernel.org, nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20240703102011.193343-1-varshini.rajendran@microchip.com> <20240703102800.195957-1-varshini.rajendran@microchip.com> From: claudiu beznea In-Reply-To: <20240703102800.195957-1-varshini.rajendran@microchip.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240714_065515_793962_9DA04EE2 X-CRM114-Status: GOOD ( 22.33 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Varshini, On 03.07.2024 13:28, Varshini Rajendran wrote: > Add a driver for the PMC clocks of sam9x7 Soc family. > > Signed-off-by: Varshini Rajendran > --- > drivers/clk/at91/Makefile | 1 + > drivers/clk/at91/sam9x7.c | 946 ++++++++++++++++++++++++++++++++++++++ > 2 files changed, 947 insertions(+) > create mode 100644 drivers/clk/at91/sam9x7.c > > diff --git a/drivers/clk/at91/Makefile b/drivers/clk/at91/Makefile > index 89061b85e7d2..8e3684ba2c74 100644 > --- a/drivers/clk/at91/Makefile > +++ b/drivers/clk/at91/Makefile > @@ -20,6 +20,7 @@ obj-$(CONFIG_SOC_AT91SAM9) += at91sam9260.o at91sam9rl.o at91sam9x5.o dt-compat. > obj-$(CONFIG_SOC_AT91SAM9) += at91sam9g45.o dt-compat.o > obj-$(CONFIG_SOC_AT91SAM9) += at91sam9n12.o at91sam9x5.o dt-compat.o > obj-$(CONFIG_SOC_SAM9X60) += sam9x60.o > +obj-$(CONFIG_SOC_SAM9X7) += sam9x7.o > obj-$(CONFIG_SOC_SAMA5D3) += sama5d3.o dt-compat.o > obj-$(CONFIG_SOC_SAMA5D4) += sama5d4.o dt-compat.o > obj-$(CONFIG_SOC_SAMA5D2) += sama5d2.o dt-compat.o > diff --git a/drivers/clk/at91/sam9x7.c b/drivers/clk/at91/sam9x7.c > new file mode 100644 > index 000000000000..b031280bbb32 > --- /dev/null > +++ b/drivers/clk/at91/sam9x7.c > @@ -0,0 +1,946 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * SAM9X7 PMC code. > + * > + * Copyright (C) 2023 Microchip Technology Inc. and its subsidiaries > + * > + * Author: Varshini Rajendran > + * > + */ > +#include > +#include > +#include > +#include > + > +#include > + > +#include "pmc.h" > + > +static DEFINE_SPINLOCK(pmc_pll_lock); > +static DEFINE_SPINLOCK(mck_lock); > + > +/** > + * enum pll_ids - PLL clocks identifiers > + * @PLL_ID_PLLA: PLLA identifier > + * @PLL_ID_UPLL: UPLL identifier > + * @PLL_ID_AUDIO: Audio PLL identifier > + * @PLL_ID_LVDS: LVDS PLL identifier > + * @PLL_ID_PLLA_DIV2: PLLA DIV2 identifier > + * @PLL_ID_MAX: Max PLL Identifier > + */ > +enum pll_ids { > + PLL_ID_PLLA, > + PLL_ID_UPLL, > + PLL_ID_AUDIO, > + PLL_ID_LVDS, > + PLL_ID_PLLA_DIV2, > + PLL_ID_MAX, > +}; > + > +/** > + * enum pll_type - PLL type identifiers > + * @PLL_TYPE_FRAC: fractional PLL identifier > + * @PLL_TYPE_DIV: divider PLL identifier > + */ > +enum pll_type { > + PLL_TYPE_FRAC, > + PLL_TYPE_DIV, > +}; > + > +static const struct clk_master_characteristics mck_characteristics = { > + .output = { .min = 32000000, .max = 266666667 }, > + .divisors = { 1, 2, 4, 3, 5}, > + .have_div3_pres = 1, > +}; > + > +static const struct clk_master_layout sam9x7_master_layout = { > + .mask = 0x373, > + .pres_shift = 4, > + .offset = 0x28, > +}; > + > +/* Fractional PLL core output range. */ > +static const struct clk_range plla_core_outputs[] = { > + { .min = 375000000, .max = 1600000000 }, > +}; > + > +static const struct clk_range upll_core_outputs[] = { > + { .min = 600000000, .max = 1200000000 }, > +}; > + > +static const struct clk_range lvdspll_core_outputs[] = { > + { .min = 400000000, .max = 800000000 }, > +}; > + > +static const struct clk_range audiopll_core_outputs[] = { > + { .min = 400000000, .max = 800000000 }, > +}; > + > +static const struct clk_range plladiv2_core_outputs[] = { > + { .min = 375000000, .max = 1600000000 }, > +}; > + > +/* Fractional PLL output range. */ > +static const struct clk_range plla_outputs[] = { > + { .min = 732421, .max = 800000000 }, > +}; > + > +static const struct clk_range upll_outputs[] = { > + { .min = 300000000, .max = 600000000 }, > +}; > + > +static const struct clk_range lvdspll_outputs[] = { > + { .min = 10000000, .max = 800000000 }, > +}; > + > +static const struct clk_range audiopll_outputs[] = { > + { .min = 10000000, .max = 800000000 }, > +}; > + > +static const struct clk_range plladiv2_outputs[] = { > + { .min = 366210, .max = 400000000 }, > +}; > + > +/* PLL characteristics. */ > +static const struct clk_pll_characteristics plla_characteristics = { > + .input = { .min = 20000000, .max = 50000000 }, > + .num_output = ARRAY_SIZE(plla_outputs), > + .output = plla_outputs, > + .core_output = plla_core_outputs, > +}; > + > +static const struct clk_pll_characteristics upll_characteristics = { > + .input = { .min = 20000000, .max = 50000000 }, > + .num_output = ARRAY_SIZE(upll_outputs), > + .output = upll_outputs, > + .core_output = upll_core_outputs, > + .upll = true, > +}; > + > +static const struct clk_pll_characteristics lvdspll_characteristics = { > + .input = { .min = 20000000, .max = 50000000 }, > + .num_output = ARRAY_SIZE(lvdspll_outputs), > + .output = lvdspll_outputs, > + .core_output = lvdspll_core_outputs, > +}; > + > +static const struct clk_pll_characteristics audiopll_characteristics = { > + .input = { .min = 20000000, .max = 50000000 }, > + .num_output = ARRAY_SIZE(audiopll_outputs), > + .output = audiopll_outputs, > + .core_output = audiopll_core_outputs, > +}; > + > +static const struct clk_pll_characteristics plladiv2_characteristics = { > + .input = { .min = 20000000, .max = 50000000 }, > + .num_output = ARRAY_SIZE(plladiv2_outputs), > + .output = plladiv2_outputs, > + .core_output = plladiv2_core_outputs, > +}; > + > +/* Layout for fractional PLL ID PLLA. */ > +static const struct clk_pll_layout plla_frac_layout = { > + .mul_mask = GENMASK(31, 24), > + .frac_mask = GENMASK(21, 0), > + .mul_shift = 24, > + .frac_shift = 0, > + .div2 = 1, > +}; > + > +/* Layout for fractional PLLs. */ > +static const struct clk_pll_layout pll_frac_layout = { > + .mul_mask = GENMASK(31, 24), > + .frac_mask = GENMASK(21, 0), > + .mul_shift = 24, > + .frac_shift = 0, > +}; > + > +/* Layout for DIV PLLs. */ > +static const struct clk_pll_layout pll_divpmc_layout = { > + .div_mask = GENMASK(7, 0), > + .endiv_mask = BIT(29), > + .div_shift = 0, > + .endiv_shift = 29, > +}; > + > +/* Layout for DIV PLL ID PLLADIV2. */ > +static const struct clk_pll_layout plladiv2_divpmc_layout = { > + .div_mask = GENMASK(7, 0), > + .endiv_mask = BIT(29), > + .div_shift = 0, > + .endiv_shift = 29, > + .div2 = 1, > +}; > + > +/* Layout for DIVIO dividers. */ > +static const struct clk_pll_layout pll_divio_layout = { > + .div_mask = GENMASK(19, 12), > + .endiv_mask = BIT(30), > + .div_shift = 12, > + .endiv_shift = 30, > +}; > + > +/* > + * PLL clocks description > + * @n: clock name > + * @p: clock parent > + * @l: clock layout > + * @t: clock type > + * @c: pll characteristics > + * @f: clock flags > + * @eid: export index in sam9x7->chws[] array > + */ > +static const struct { > + const char *n; > + const char *p; > + const struct clk_pll_layout *l; > + u8 t; > + const struct clk_pll_characteristics *c; > + unsigned long f; > + u8 eid; > +} sam9x7_plls[][PLL_ID_MAX] = { > + [PLL_ID_PLLA] = { > + { > + .n = "plla_fracck", > + .p = "mainck", > + .l = &plla_frac_layout, > + .t = PLL_TYPE_FRAC, > + /* > + * This feeds plla_divpmcck which feeds CPU. It should > + * not be disabled. > + */ > + .f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE, > + .c = &plla_characteristics, > + }, > + > + { > + .n = "plla_divpmcck", > + .p = "plla_fracck", > + .l = &pll_divpmc_layout, > + .t = PLL_TYPE_DIV, > + /* This feeds CPU. It should not be disabled */ > + .f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE, > + .eid = PMC_PLLACK, > + .c = &plla_characteristics, > + }, > + }, > + > + [PLL_ID_UPLL] = { > + { > + .n = "upll_fracck", > + .p = "main_osc", > + .l = &pll_frac_layout, > + .t = PLL_TYPE_FRAC, > + .f = CLK_SET_RATE_GATE, > + .c = &upll_characteristics, > + }, > + > + { > + .n = "upll_divpmcck", > + .p = "upll_fracck", > + .l = &pll_divpmc_layout, > + .t = PLL_TYPE_DIV, > + .f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE | > + CLK_SET_RATE_PARENT, > + .eid = PMC_UTMI, > + .c = &upll_characteristics, > + }, > + }, > + > + [PLL_ID_AUDIO] = { > + { > + .n = "audiopll_fracck", > + .p = "main_osc", > + .l = &pll_frac_layout, > + .f = CLK_SET_RATE_GATE, > + .c = &audiopll_characteristics, > + .t = PLL_TYPE_FRAC, > + }, > + > + { > + .n = "audiopll_divpmcck", > + .p = "audiopll_fracck", > + .l = &pll_divpmc_layout, > + .f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE | > + CLK_SET_RATE_PARENT, > + .c = &audiopll_characteristics, > + .eid = PMC_AUDIOPMCPLL, > + .t = PLL_TYPE_DIV, > + }, > + > + { > + .n = "audiopll_diviock", > + .p = "audiopll_fracck", > + .l = &pll_divio_layout, > + .f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE | > + CLK_SET_RATE_PARENT, > + .c = &audiopll_characteristics, > + .eid = PMC_AUDIOIOPLL, > + .t = PLL_TYPE_DIV, > + }, > + }, > + > + [PLL_ID_LVDS] = { > + { > + .n = "lvdspll_fracck", > + .p = "main_osc", > + .l = &pll_frac_layout, > + .f = CLK_SET_RATE_GATE, > + .c = &lvdspll_characteristics, > + .t = PLL_TYPE_FRAC, > + }, > + > + { > + .n = "lvdspll_divpmcck", > + .p = "lvdspll_fracck", > + .l = &pll_divpmc_layout, > + .f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE | > + CLK_SET_RATE_PARENT, > + .c = &lvdspll_characteristics, > + .eid = PMC_LVDSPLL, > + .t = PLL_TYPE_DIV, > + }, > + }, > + > + [PLL_ID_PLLA_DIV2] = { > + { > + .n = "plla_div2pmcck", > + .p = "plla_fracck", > + .l = &plladiv2_divpmc_layout, > + /* > + * This may feed critical parts of the system like timers. > + * It should not be disabled. > + */ > + .f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE, > + .c = &plladiv2_characteristics, > + .eid = PMC_PLLADIV2, > + .t = PLL_TYPE_DIV, > + }, > + }, > +}; > + > +static const struct clk_programmable_layout sam9x7_programmable_layout = { > + .pres_mask = 0xff, > + .pres_shift = 8, > + .css_mask = 0x1f, > + .have_slck_mck = 0, > + .is_pres_direct = 1, > +}; > + > +static const struct clk_pcr_layout sam9x7_pcr_layout = { > + .offset = 0x88, > + .cmd = BIT(31), > + .gckcss_mask = GENMASK(12, 8), > + .pid_mask = GENMASK(6, 0), > +}; > + > +static const struct { > + char *n; > + char *p; > + u8 id; > + unsigned long flags; > +} sam9x7_systemck[] = { > + /* > + * ddrck feeds DDR controller and is enabled by bootloader thus we need > + * to keep it enabled in case there is no Linux consumer for it. > + */ > + { .n = "ddrck", .p = "masterck_div", .id = 2, .flags = CLK_IS_CRITICAL }, > + { .n = "uhpck", .p = "usbck", .id = 6 }, > + { .n = "pck0", .p = "prog0", .id = 8 }, > + { .n = "pck1", .p = "prog1", .id = 9 }, > +}; > + > +/* > + * Peripheral clocks description > + * @n: clock name > + * @f: clock flags > + * @id: peripheral id > + */ > +static const struct { > + char *n; > + unsigned long f; > + u8 id; > +} sam9x7_periphck[] = { > + { .n = "pioA_clk", .id = 2, }, > + { .n = "pioB_clk", .id = 3, }, > + { .n = "pioC_clk", .id = 4, }, > + { .n = "flex0_clk", .id = 5, }, > + { .n = "flex1_clk", .id = 6, }, > + { .n = "flex2_clk", .id = 7, }, > + { .n = "flex3_clk", .id = 8, }, > + { .n = "flex6_clk", .id = 9, }, > + { .n = "flex7_clk", .id = 10, }, > + { .n = "flex8_clk", .id = 11, }, > + { .n = "sdmmc0_clk", .id = 12, }, > + { .n = "flex4_clk", .id = 13, }, > + { .n = "flex5_clk", .id = 14, }, > + { .n = "flex9_clk", .id = 15, }, > + { .n = "flex10_clk", .id = 16, }, > + { .n = "tcb0_clk", .id = 17, }, > + { .n = "pwm_clk", .id = 18, }, > + { .n = "adc_clk", .id = 19, }, > + { .n = "dma0_clk", .id = 20, }, > + { .n = "uhphs_clk", .id = 22, }, > + { .n = "udphs_clk", .id = 23, }, > + { .n = "macb0_clk", .id = 24, }, > + { .n = "lcd_clk", .id = 25, }, > + { .n = "sdmmc1_clk", .id = 26, }, > + { .n = "ssc_clk", .id = 28, }, > + { .n = "can0_clk", .id = 29, }, > + { .n = "can1_clk", .id = 30, }, > + { .n = "flex11_clk", .id = 32, }, > + { .n = "flex12_clk", .id = 33, }, > + { .n = "i2s_clk", .id = 34, }, > + { .n = "qspi_clk", .id = 35, }, > + { .n = "gfx2d_clk", .id = 36, }, > + { .n = "pit64b0_clk", .id = 37, }, > + { .n = "trng_clk", .id = 38, }, > + { .n = "aes_clk", .id = 39, }, > + { .n = "tdes_clk", .id = 40, }, > + { .n = "sha_clk", .id = 41, }, > + { .n = "classd_clk", .id = 42, }, > + { .n = "isi_clk", .id = 43, }, > + { .n = "pioD_clk", .id = 44, }, > + { .n = "tcb1_clk", .id = 45, }, > + { .n = "dbgu_clk", .id = 47, }, > + /* > + * mpddr_clk feeds DDR controller and is enabled by bootloader thus we > + * need to keep it enabled in case there is no Linux consumer for it. > + */ > + { .n = "mpddr_clk", .id = 49, .f = CLK_IS_CRITICAL }, > + { .n = "csi2dc_clk", .id = 52, }, > + { .n = "csi4l_clk", .id = 53, }, > + { .n = "dsi4l_clk", .id = 54, }, > + { .n = "lvdsc_clk", .id = 56, }, > + { .n = "pit64b1_clk", .id = 58, }, > + { .n = "puf_clk", .id = 59, }, > + { .n = "gmactsu_clk", .id = 67, }, > +}; > + > +/* > + * Generic clock description > + * @n: clock name > + * @pp: PLL parents > + * @pp_mux_table: PLL parents mux table > + * @r: clock output range > + * @pp_chg_id: id in parent array of changeable PLL parent > + * @pp_count: PLL parents count > + * @id: clock id > + */ > +static const struct { > + const char *n; > + const char *pp[8]; > + const char pp_mux_table[8]; > + struct clk_range r; > + int pp_chg_id; > + u8 pp_count; > + u8 id; > +} sam9x7_gck[] = { > + { > + .n = "flex0_gclk", > + .id = 5, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex1_gclk", > + .id = 6, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex2_gclk", > + .id = 7, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex3_gclk", > + .id = 8, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex6_gclk", > + .id = 9, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex7_gclk", > + .id = 10, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex8_gclk", > + .id = 11, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "sdmmc0_gclk", > + .id = 12, > + .r = { .max = 105000000 }, > + .pp = { "audiopll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 6, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex4_gclk", > + .id = 13, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex5_gclk", > + .id = 14, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex9_gclk", > + .id = 15, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex10_gclk", > + .id = 16, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "tcb0_gclk", > + .id = 17, > + .pp = { "audiopll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 6, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "adc_gclk", > + .id = 19, > + .pp = { "upll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 5, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "lcd_gclk", > + .id = 25, > + .r = { .max = 75000000 }, > + .pp = { "audiopll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 6, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "sdmmc1_gclk", > + .id = 26, > + .r = { .max = 105000000 }, > + .pp = { "audiopll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 6, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "mcan0_gclk", > + .id = 29, > + .r = { .max = 80000000 }, > + .pp = { "upll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 5, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "mcan1_gclk", > + .id = 30, > + .r = { .max = 80000000 }, > + .pp = { "upll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 5, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex11_gclk", > + .id = 32, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "flex12_gclk", > + .id = 33, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "i2s_gclk", > + .id = 34, > + .r = { .max = 100000000 }, > + .pp = { "audiopll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 6, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "qspi_gclk", > + .id = 35, > + .r = { .max = 200000000 }, > + .pp = { "audiopll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 6, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "pit64b0_gclk", > + .id = 37, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "classd_gclk", > + .id = 42, > + .r = { .max = 100000000 }, > + .pp = { "audiopll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 6, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "tcb1_gclk", > + .id = 45, > + .pp = { "audiopll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 6, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "dbgu_gclk", > + .id = 47, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "mipiphy_gclk", > + .id = 55, > + .r = { .max = 27000000 }, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "pit64b1_gclk", > + .id = 58, > + .pp = { "plla_div2pmcck", }, > + .pp_mux_table = { 8, }, > + .pp_count = 1, > + .pp_chg_id = INT_MIN, > + }, > + > + { > + .n = "gmac_gclk", > + .id = 67, > + .pp = { "audiopll_divpmcck", "plla_div2pmcck", }, > + .pp_mux_table = { 6, 8, }, > + .pp_count = 2, > + .pp_chg_id = INT_MIN, > + }, > +}; > + > +static void __init sam9x7_pmc_setup(struct device_node *np) > +{ > + struct clk_range range = CLK_RANGE(0, 0); > + const char *td_slck_name, *md_slck_name, *mainxtal_name; > + struct pmc_data *sam9x7_pmc; > + const char *parent_names[9]; > + void **clk_mux_buffer = NULL; > + int clk_mux_buffer_size = 0; > + struct clk_hw *main_osc_hw; > + struct regmap *regmap; > + struct clk_hw *hw; > + int i, j; > + > + i = of_property_match_string(np, "clock-names", "td_slck"); > + if (i < 0) > + return; > + > + td_slck_name = of_clk_get_parent_name(np, i); > + > + i = of_property_match_string(np, "clock-names", "md_slck"); > + if (i < 0) > + return; > + > + md_slck_name = of_clk_get_parent_name(np, i); > + > + i = of_property_match_string(np, "clock-names", "main_xtal"); > + if (i < 0) > + return; > + mainxtal_name = of_clk_get_parent_name(np, i); > + > + regmap = device_node_to_regmap(np); > + if (IS_ERR(regmap)) > + return; > + > + sam9x7_pmc = pmc_data_allocate(PMC_LVDSPLL + 1, > + nck(sam9x7_systemck), > + nck(sam9x7_periphck), > + nck(sam9x7_gck), 8); > + if (!sam9x7_pmc) > + return; > + > + clk_mux_buffer = kmalloc(sizeof(void *) * > + (ARRAY_SIZE(sam9x7_gck)), > + GFP_KERNEL); > + if (!clk_mux_buffer) > + goto err_free; > + > + hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000, > + 50000000); > + if (IS_ERR(hw)) > + goto err_free; > + > + hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name, NULL, 0); > + if (IS_ERR(hw)) > + goto err_free; > + main_osc_hw = hw; > + > + parent_names[0] = "main_rc_osc"; > + parent_names[1] = "main_osc"; > + hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, NULL, 2); > + if (IS_ERR(hw)) > + goto err_free; > + > + sam9x7_pmc->chws[PMC_MAIN] = hw; > + > + for (i = 0; i < PLL_ID_MAX; i++) { > + for (j = 0; j < 3; j++) { I now realize that we are alocating more than needed memory for each PLL in sam9x7_plls[][]. The number of columns for the 2d array is PLL_ID_MAX and it should be 3. I can adjust it when applying but I need you to run a simple boot test with it. > + struct clk_hw *parent_hw; > + > + if (!sam9x7_plls[i][j].n) > + continue; > + > + switch (sam9x7_plls[i][j].t) { > + case PLL_TYPE_FRAC: > + if (!strcmp(sam9x7_plls[i][j].p, "mainck")) > + parent_hw = sam9x7_pmc->chws[PMC_MAIN]; > + else if (!strcmp(sam9x7_plls[i][j].p, "main_osc")) > + parent_hw = main_osc_hw; > + else > + parent_hw = __clk_get_hw(of_clk_get_by_name > + (np, sam9x7_plls[i][j].p)); > + > + hw = sam9x60_clk_register_frac_pll(regmap, > + &pmc_pll_lock, > + sam9x7_plls[i][j].n, > + sam9x7_plls[i][j].p, > + parent_hw, i, > + sam9x7_plls[i][j].c, > + sam9x7_plls[i][j].l, > + sam9x7_plls[i][j].f); > + break; > + > + case PLL_TYPE_DIV: > + hw = sam9x60_clk_register_div_pll(regmap, > + &pmc_pll_lock, > + sam9x7_plls[i][j].n, > + sam9x7_plls[i][j].p, NULL, i, > + sam9x7_plls[i][j].c, > + sam9x7_plls[i][j].l, > + sam9x7_plls[i][j].f, 0); > + break; > + > + default: > + continue; > + } > + > + if (IS_ERR(hw)) > + goto err_free; > + > + if (sam9x7_plls[i][j].eid) > + sam9x7_pmc->chws[sam9x7_plls[i][j].eid] = hw; > + } > + } > + > + parent_names[0] = md_slck_name; > + parent_names[1] = "mainck"; > + parent_names[2] = "plla_divpmcck"; > + parent_names[3] = "upll_divpmcck"; > + hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4, > + parent_names, NULL, &sam9x7_master_layout, > + &mck_characteristics, &mck_lock); > + if (IS_ERR(hw)) > + goto err_free; > + > + hw = at91_clk_register_master_div(regmap, "masterck_div", > + "masterck_pres", NULL, &sam9x7_master_layout, > + &mck_characteristics, &mck_lock, > + CLK_SET_RATE_GATE, 0); > + if (IS_ERR(hw)) > + goto err_free; > + > + sam9x7_pmc->chws[PMC_MCK] = hw; > + > + parent_names[0] = "plla_divpmcck"; > + parent_names[1] = "upll_divpmcck"; > + parent_names[2] = "main_osc"; > + hw = sam9x60_clk_register_usb(regmap, "usbck", parent_names, 3); > + if (IS_ERR(hw)) > + goto err_free; > + > + parent_names[0] = md_slck_name; > + parent_names[1] = td_slck_name; > + parent_names[2] = "mainck"; > + parent_names[3] = "masterck_div"; > + parent_names[4] = "plla_divpmcck"; > + parent_names[5] = "upll_divpmcck"; > + parent_names[6] = "audiopll_divpmcck"; > + for (i = 0; i < 2; i++) { > + char name[6]; > + > + snprintf(name, sizeof(name), "prog%d", i); > + > + hw = at91_clk_register_programmable(regmap, name, > + parent_names, NULL, 7, i, > + &sam9x7_programmable_layout, > + NULL); > + if (IS_ERR(hw)) > + goto err_free; > + > + sam9x7_pmc->pchws[i] = hw; > + } > + > + for (i = 0; i < ARRAY_SIZE(sam9x7_systemck); i++) { > + hw = at91_clk_register_system(regmap, sam9x7_systemck[i].n, > + sam9x7_systemck[i].p, NULL, > + sam9x7_systemck[i].id, > + sam9x7_systemck[i].flags); > + if (IS_ERR(hw)) > + goto err_free; > + > + sam9x7_pmc->shws[sam9x7_systemck[i].id] = hw; > + } > + > + for (i = 0; i < ARRAY_SIZE(sam9x7_periphck); i++) { > + hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock, > + &sam9x7_pcr_layout, > + sam9x7_periphck[i].n, > + "masterck_div", NULL, > + sam9x7_periphck[i].id, > + &range, INT_MIN, > + sam9x7_periphck[i].f); > + if (IS_ERR(hw)) > + goto err_free; > + > + sam9x7_pmc->phws[sam9x7_periphck[i].id] = hw; > + } > + > + parent_names[0] = md_slck_name; > + parent_names[1] = td_slck_name; > + parent_names[2] = "mainck"; > + parent_names[3] = "masterck_div"; > + for (i = 0; i < ARRAY_SIZE(sam9x7_gck); i++) { > + u8 num_parents = 4 + sam9x7_gck[i].pp_count; > + u32 *mux_table; > + > + mux_table = kmalloc_array(num_parents, sizeof(*mux_table), > + GFP_KERNEL); > + if (!mux_table) > + goto err_free; > + > + PMC_INIT_TABLE(mux_table, 4); > + PMC_FILL_TABLE(&mux_table[4], sam9x7_gck[i].pp_mux_table, > + sam9x7_gck[i].pp_count); > + PMC_FILL_TABLE(&parent_names[4], sam9x7_gck[i].pp, > + sam9x7_gck[i].pp_count); > + > + hw = at91_clk_register_generated(regmap, &pmc_pcr_lock, > + &sam9x7_pcr_layout, > + sam9x7_gck[i].n, > + parent_names, NULL, mux_table, > + num_parents, > + sam9x7_gck[i].id, > + &sam9x7_gck[i].r, > + sam9x7_gck[i].pp_chg_id); > + if (IS_ERR(hw)) > + goto err_free; > + > + sam9x7_pmc->ghws[sam9x7_gck[i].id] = hw; > + clk_mux_buffer[clk_mux_buffer_size++] = mux_table; > + } > + > + of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sam9x7_pmc); > + kfree(clk_mux_buffer); > + > + return; > + > +err_free: > + if (clk_mux_buffer) { > + for (i = 0; i < clk_mux_buffer_size; i++) > + kfree(clk_mux_buffer[i]); > + kfree(clk_mux_buffer); > + } > + kfree(sam9x7_pmc); > +} > + > +/* Some clks are used for a clocksource */ > +CLK_OF_DECLARE(sam9x7_pmc, "microchip,sam9x7-pmc", sam9x7_pmc_setup);