From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1A144C169D4 for ; Tue, 16 Oct 2018 14:22:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C8B632086E for ; Tue, 16 Oct 2018 14:22:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C8B632086E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727623AbeJPWNS (ORCPT ); Tue, 16 Oct 2018 18:13:18 -0400 Received: from mail.bootlin.com ([62.4.15.54]:48211 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727154AbeJPWNQ (ORCPT ); Tue, 16 Oct 2018 18:13:16 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id DD09820E01; Tue, 16 Oct 2018 16:22:30 +0200 (CEST) Received: from localhost (242.171.71.37.rev.sfr.net [37.71.171.242]) by mail.bootlin.com (Postfix) with ESMTPSA id 297A720DE8; Tue, 16 Oct 2018 16:22:04 +0200 (CEST) From: Alexandre Belloni To: Stephen Boyd Cc: Nicolas Ferre , Michael Turquette , Thomas Petazzoni , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Alexandre Belloni Subject: [PATCH v2 13/22] clk: at91: add at91sam9x5 PMCs driver Date: Tue, 16 Oct 2018 16:21:51 +0200 Message-Id: <20181016142200.19741-14-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181016142200.19741-1-alexandre.belloni@bootlin.com> References: <20181016142200.19741-1-alexandre.belloni@bootlin.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a driver for the PMC clocks of the at91sam9x5 SoCs Signed-off-by: Alexandre Belloni --- drivers/clk/at91/Makefile | 2 +- drivers/clk/at91/at91sam9x5.c | 309 ++++++++++++++++++++++++++++++++++ 2 files changed, 310 insertions(+), 1 deletion(-) create mode 100644 drivers/clk/at91/at91sam9x5.c diff --git a/drivers/clk/at91/Makefile b/drivers/clk/at91/Makefile index 08399003c752..78dc71d653de 100644 --- a/drivers/clk/at91/Makefile +++ b/drivers/clk/at91/Makefile @@ -14,6 +14,6 @@ obj-$(CONFIG_HAVE_AT91_SMD) += clk-smd.o obj-$(CONFIG_HAVE_AT91_H32MX) += clk-h32mx.o obj-$(CONFIG_HAVE_AT91_GENERATED_CLK) += clk-generated.o obj-$(CONFIG_HAVE_AT91_I2S_MUX_CLK) += clk-i2s-mux.o -obj-$(CONFIG_SOC_AT91SAM9) += at91sam9260.o +obj-$(CONFIG_SOC_AT91SAM9) += at91sam9260.o at91sam9x5.o obj-$(CONFIG_SOC_SAMA5D4) += sama5d4.o obj-$(CONFIG_SOC_SAMA5D2) += sama5d2.o diff --git a/drivers/clk/at91/at91sam9x5.c b/drivers/clk/at91/at91sam9x5.c new file mode 100644 index 000000000000..3cdf227ce159 --- /dev/null +++ b/drivers/clk/at91/at91sam9x5.c @@ -0,0 +1,309 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include + +#include + +#include "pmc.h" + +static const struct clk_master_characteristics mck_characteristics = { + .output = { .min = 0, .max = 133333333 }, + .divisors = { 1, 2, 4, 3 }, + .have_div3_pres = 1, +}; + +static u8 plla_out[] = { 0, 1, 2, 3, 0, 1, 2, 3 }; + +static u16 plla_icpll[] = { 0, 0, 0, 0, 1, 1, 1, 1 }; + +static struct clk_range plla_outputs[] = { + { .min = 745000000, .max = 800000000 }, + { .min = 695000000, .max = 750000000 }, + { .min = 645000000, .max = 700000000 }, + { .min = 595000000, .max = 650000000 }, + { .min = 545000000, .max = 600000000 }, + { .min = 495000000, .max = 555000000 }, + { .min = 445000000, .max = 500000000 }, + { .min = 400000000, .max = 450000000 }, +}; + +static const struct clk_pll_characteristics plla_characteristics = { + .input = { .min = 2000000, .max = 32000000 }, + .num_output = ARRAY_SIZE(plla_outputs), + .output = plla_outputs, + .icpll = plla_icpll, + .out = plla_out, +}; + +static const struct { + char *n; + char *p; + u8 id; +} at91sam9x5_systemck[] = { + { .n = "ddrck", .p = "masterck", .id = 2 }, + { .n = "smdck", .p = "smdclk", .id = 4 }, + { .n = "uhpck", .p = "usbck", .id = 6 }, + { .n = "udpck", .p = "usbck", .id = 7 }, + { .n = "pck0", .p = "prog0", .id = 8 }, + { .n = "pck1", .p = "prog1", .id = 9 }, +}; + +struct pck { + char *n; + u8 id; +}; + +static const struct pck at91sam9x5_periphck[] = { + { .n = "pioAB_clk", .id = 2, }, + { .n = "pioCD_clk", .id = 3, }, + { .n = "smd_clk", .id = 4, }, + { .n = "usart0_clk", .id = 5, }, + { .n = "usart1_clk", .id = 6, }, + { .n = "usart2_clk", .id = 7, }, + { .n = "twi0_clk", .id = 9, }, + { .n = "twi1_clk", .id = 10, }, + { .n = "twi2_clk", .id = 11, }, + { .n = "mci0_clk", .id = 12, }, + { .n = "spi0_clk", .id = 13, }, + { .n = "spi1_clk", .id = 14, }, + { .n = "uart0_clk", .id = 15, }, + { .n = "uart1_clk", .id = 16, }, + { .n = "tcb0_clk", .id = 17, }, + { .n = "pwm_clk", .id = 18, }, + { .n = "adc_clk", .id = 19, }, + { .n = "dma0_clk", .id = 20, }, + { .n = "dma1_clk", .id = 21, }, + { .n = "uhphs_clk", .id = 22, }, + { .n = "udphs_clk", .id = 23, }, + { .n = "mci1_clk", .id = 26, }, + { .n = "ssc0_clk", .id = 28, }, +}; + +static const struct pck at91sam9g15_periphck[] = { + { .n = "lcdc_clk", .id = 25, }, + { /* sentinel */} +}; + +static const struct pck at91sam9g25_periphck[] = { + { .n = "usart3_clk", .id = 8, }, + { .n = "macb0_clk", .id = 24, }, + { .n = "isi_clk", .id = 25, }, + { /* sentinel */} +}; + +static const struct pck at91sam9g35_periphck[] = { + { .n = "macb0_clk", .id = 24, }, + { .n = "lcdc_clk", .id = 25, }, + { /* sentinel */} +}; + +static const struct pck at91sam9x25_periphck[] = { + { .n = "usart3_clk", .id = 8, }, + { .n = "macb0_clk", .id = 24, }, + { .n = "macb1_clk", .id = 27, }, + { .n = "can0_clk", .id = 29, }, + { .n = "can1_clk", .id = 30, }, + { /* sentinel */} +}; + +static const struct pck at91sam9x35_periphck[] = { + { .n = "macb0_clk", .id = 24, }, + { .n = "lcdc_clk", .id = 25, }, + { .n = "can0_clk", .id = 29, }, + { .n = "can1_clk", .id = 30, }, + { /* sentinel */} +}; + +static void __init at91sam9x5_pmc_setup(struct device_node *np, + const struct pck *extra_pcks, + bool has_lcdck) +{ + struct clk_range range = CLK_RANGE(0, 0); + const char *slck_name, *mainxtal_name; + struct pmc_data *at91sam9x5_pmc; + const char *parent_names[6]; + struct regmap *regmap; + struct clk_hw *hw; + unsigned int i; + bool bypass; + + i = of_property_match_string(np, "clock-names", "slow_clk"); + if (i < 0) + return; + + 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 = syscon_node_to_regmap(np); + if (IS_ERR(regmap)) + return; + + at91sam9x5_pmc = pmc_data_allocate(PMC_MAIN + 1, + nck(at91sam9x5_systemck), + nck(at91sam9x35_periphck), 0); + if (!at91sam9x5_pmc) + return; + + hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000, + 50000000); + if (IS_ERR(hw)) + goto err_free; + + bypass = of_property_read_bool(np, "atmel,osc-bypass"); + + hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name, + bypass); + if (IS_ERR(hw)) + goto err_free; + + parent_names[0] = "main_rc_osc"; + parent_names[1] = "main_osc"; + hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2); + if (IS_ERR(hw)) + goto err_free; + + at91sam9x5_pmc->chws[PMC_MAIN] = hw; + + hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0, + &at91rm9200_pll_layout, &plla_characteristics); + if (IS_ERR(hw)) + goto err_free; + + hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack"); + if (IS_ERR(hw)) + goto err_free; + + hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck"); + if (IS_ERR(hw)) + goto err_free; + + at91sam9x5_pmc->chws[PMC_UTMI] = hw; + + parent_names[0] = slck_name; + parent_names[1] = "mainck"; + parent_names[2] = "plladivck"; + parent_names[3] = "utmick"; + hw = at91_clk_register_master(regmap, "masterck", 4, parent_names, + &at91sam9x5_master_layout, + &mck_characteristics); + if (IS_ERR(hw)) + goto err_free; + + at91sam9x5_pmc->chws[PMC_MCK] = hw; + + parent_names[0] = "plladivck"; + parent_names[1] = "utmick"; + hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2); + if (IS_ERR(hw)) + goto err_free; + + hw = at91sam9x5_clk_register_smd(regmap, "smdclk", parent_names, 2); + if (IS_ERR(hw)) + goto err_free; + + parent_names[0] = slck_name; + parent_names[1] = "mainck"; + parent_names[2] = "plladivck"; + parent_names[3] = "utmick"; + parent_names[4] = "mck"; + 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, 5, i, + &at91sam9x5_programmable_layout); + if (IS_ERR(hw)) + goto err_free; + } + + for (i = 0; i < ARRAY_SIZE(at91sam9x5_systemck); i++) { + hw = at91_clk_register_system(regmap, at91sam9x5_systemck[i].n, + at91sam9x5_systemck[i].p, + at91sam9x5_systemck[i].id); + if (IS_ERR(hw)) + goto err_free; + + at91sam9x5_pmc->shws[at91sam9x5_systemck[i].id] = hw; + } + + if (has_lcdck) { + hw = at91_clk_register_system(regmap, "lcdck", "masterck", 3); + if (IS_ERR(hw)) + goto err_free; + + at91sam9x5_pmc->shws[3] = hw; + } + + for (i = 0; i < ARRAY_SIZE(at91sam9x5_periphck); i++) { + hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock, + at91sam9x5_periphck[i].n, + "masterck", + at91sam9x5_periphck[i].id, + &range); + if (IS_ERR(hw)) + goto err_free; + + at91sam9x5_pmc->phws[at91sam9x5_periphck[i].id] = hw; + } + + for (i = 0; extra_pcks[i].id; i++) { + hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock, + extra_pcks[i].n, + "masterck", + extra_pcks[i].id, + &range); + if (IS_ERR(hw)) + goto err_free; + + at91sam9x5_pmc->phws[extra_pcks[i].id] = hw; + } + + of_clk_add_hw_provider(np, of_clk_hw_pmc_get, at91sam9x5_pmc); + + return; + +err_free: + pmc_data_free(at91sam9x5_pmc); +} + +static void __init at91sam9g15_pmc_setup(struct device_node *np) +{ + at91sam9x5_pmc_setup(np, at91sam9g15_periphck, true); +} +CLK_OF_DECLARE_DRIVER(at91sam9g15_pmc, "atmel,at91sam9g15-pmc", + at91sam9g15_pmc_setup); + +static void __init at91sam9g25_pmc_setup(struct device_node *np) +{ + at91sam9x5_pmc_setup(np, at91sam9g25_periphck, false); +} +CLK_OF_DECLARE_DRIVER(at91sam9g25_pmc, "atmel,at91sam9g25-pmc", + at91sam9g25_pmc_setup); + +static void __init at91sam9g35_pmc_setup(struct device_node *np) +{ + at91sam9x5_pmc_setup(np, at91sam9g35_periphck, true); +} +CLK_OF_DECLARE_DRIVER(at91sam9g35_pmc, "atmel,at91sam9g35-pmc", + at91sam9g35_pmc_setup); + +static void __init at91sam9x25_pmc_setup(struct device_node *np) +{ + at91sam9x5_pmc_setup(np, at91sam9x25_periphck, false); +} +CLK_OF_DECLARE_DRIVER(at91sam9x25_pmc, "atmel,at91sam9x25-pmc", + at91sam9x25_pmc_setup); + +static void __init at91sam9x35_pmc_setup(struct device_node *np) +{ + at91sam9x5_pmc_setup(np, at91sam9x35_periphck, true); +} +CLK_OF_DECLARE_DRIVER(at91sam9x35_pmc, "atmel,at91sam9x35-pmc", + at91sam9x35_pmc_setup); -- 2.19.1