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Wed, 28 May 2025 22:10:30 -0700 (PDT) From: Michael Trimarchi To: u-boot@lists.denx.de Cc: linux-amarula@amarulasolutions.com, cniedermaier@dh-electronics.com, Michael Trimarchi , Peng Fan , Adam Ford , Lukasz Majewski , Sean Anderson , Simon Glass , Stefano Babic , Tom Rini Subject: [PATCH v3 1/4] clk: imx: add i.MX6UL clk driver Date: Thu, 29 May 2025 07:10:15 +0200 Message-ID: <20250529051024.42340-1-michael@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-Original-Sender: michael@amarulasolutions.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@amarulasolutions.com header.s=google header.b=du0j5ueQ; spf=pass (google.com: domain of michael@amarulasolutions.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=michael@amarulasolutions.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=amarulasolutions.com; dara=pass header.i=@amarulasolutions.com Content-Type: text/plain; charset="UTF-8" Precedence: list Mailing-list: list linux-amarula@amarulasolutions.com; contact linux-amarula+owners@amarulasolutions.com List-ID: X-Spam-Checked-In-Group: linux-amarula@amarulasolutions.com X-Google-Group-Id: 476853432473 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Add i.MX6UL clk driver for i.MX6UL CLK driver model usage Reviewed-by: Peng Fan Signed-off-by: Michael Trimarchi Reviewed-by: Christoph Niedermaier --- Changes in v3: - Add all uarts definition - Move OSC on top suggested - Drop an invalid clock definition - Move some pll before they are referenced Changes in v2: - None drivers/clk/imx/Kconfig | 8 + drivers/clk/imx/Makefile | 1 + drivers/clk/imx/clk-imx6ul.c | 290 +++++++++++++++++++++++++++++++++++ 3 files changed, 299 insertions(+) create mode 100644 drivers/clk/imx/clk-imx6ul.c diff --git a/drivers/clk/imx/Kconfig b/drivers/clk/imx/Kconfig index d17a54fb9b3..705d4a8e2ac 100644 --- a/drivers/clk/imx/Kconfig +++ b/drivers/clk/imx/Kconfig @@ -14,6 +14,14 @@ config CLK_IMX6Q help This enables DM/DTS support for clock driver in i.MX6Q platforms. +config CLK_IMX6UL + bool "Clock support for i.MXUL" + depends on ARCH_MX6 + select CLK + select CLK_CCF + help + This enables DM/DTS support for clock driver in i.MX6UL platforms. + config CLK_IMX8 bool "Clock support for i.MX8" depends on ARCH_IMX8 diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index a89ee7acb12..b10221a195c 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_$(PHASE_)CLK_CCF) += clk-gate2.o clk-pllv3.o clk-pfd.o obj-$(CONFIG_$(PHASE_)CLK_IMX6Q) += clk-imx6q.o +obj-$(CONFIG_$(PHASE_)CLK_IMX6UL) += clk-imx6ul.o obj-$(CONFIG_CLK_IMX8) += clk-imx8.o ifdef CONFIG_CLK_IMX8 diff --git a/drivers/clk/imx/clk-imx6ul.c b/drivers/clk/imx/clk-imx6ul.c new file mode 100644 index 00000000000..bd52c1d487c --- /dev/null +++ b/drivers/clk/imx/clk-imx6ul.c @@ -0,0 +1,290 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2025 Amarula Solutions Software Engineering + * Michael Trimarchi, Amarula Solutions Software Engineering, michael@amarulasolutions.com + */ + +#include +#include +#include +#include +#include +#include + +#include "clk.h" + +static int imx6ul_clk_request(struct clk *clk) +{ + debug("%s: request clk id %ld\n", __func__, clk->id); + + if (clk->id < IMX6UL_CLK_DUMMY || clk->id >= IMX6UL_CLK_END) { + printf("%s: Invalid clk ID #%lu\n", __func__, clk->id); + return -EINVAL; + } + + return 0; +} + +static struct clk_ops imx6ul_clk_ops = { + .request = imx6ul_clk_request, + .set_rate = ccf_clk_set_rate, + .get_rate = ccf_clk_get_rate, + .enable = ccf_clk_enable, + .disable = ccf_clk_disable, +}; + +static const char *const pll_bypass_src_sels[] = { "osc", "dummy", }; +static const char *const pll3_bypass_sels[] = { "pll3", "pll3_bypass_src", }; +static const char *const bch_sels[] = { "pll2_pfd2_396m", "pll2_pfd0_352m", }; +static const char *const gpmi_sels[] = { "pll2_pfd2_396m", "pll2_pfd0_352m", }; + +static const char *const enfc_sels[] = { "pll2_pfd0_352m", "pll2_bus", "pll3_usb_otg", "pll2_pfd2_396m", + "pll3_pfd3_454m", "dummy", "dummy", "dummy", }; +static const char *const usdhc_sels[] = { "pll2_pfd2_396m", "pll2_pfd0_352m", }; +static const char *const periph_sels[] = { "periph_pre", "periph_clk2", }; +static const char *const periph2_pre_sels[] = { "pll2_bus", "pll2_pfd2_396m", "pll2_pfd0_352m", + "pll4_audio_div", }; +static const char *const periph_clk2_sels[] = { "pll3_usb_otg", "osc", "pll2_bypass_src", }; +static const char *const periph2_clk2_sels[] = { "pll3_usb_otg", "osc", }; +static const char *const perclk_sels[] = { "ipg", "osc", }; + +static const char *const periph_pre_sels[] = { "pll2_bus", "pll2_pfd2_396m", "pll2_pfd0_352m", + "pll2_198m", }; +static const char *const uart_sels[] = { "pll3_80m", "osc", }; +static const char *const ecspi_sels[] = { "pll3_60m", "osc", }; + +static int imx6ul_clk_probe(struct udevice *dev) +{ + struct clk osc_clk; + void *base; + int ret; + + /* Anatop clocks */ + base = (void *)ANATOP_BASE_ADDR; + + clk_dm(IMX6UL_CLK_DUMMY, clk_register_fixed_rate(NULL, "dummy", 0)); + + ret = clk_get_by_name(dev, "osc", &osc_clk); + if (ret) + return ret; + + clk_dm(IMX6UL_CLK_OSC, dev_get_clk_ptr(osc_clk.dev)); + + clk_dm(IMX6UL_CLK_PLL2, + imx_clk_pllv3(dev, IMX_PLLV3_GENERIC, "pll2_bus", "osc", + base + 0x30, 0x1)); + clk_dm(IMX6UL_CLK_PLL3, + imx_clk_pllv3(dev, IMX_PLLV3_USB, "pll3", "osc", + base + 0x10, 0x3)); + clk_dm(IMX6UL_PLL3_BYPASS_SRC, + imx_clk_mux(dev, "pll3_bypass_src", base + 0x10, 14, 1, + pll_bypass_src_sels, + ARRAY_SIZE(pll_bypass_src_sels))); + clk_dm(IMX6UL_PLL3_BYPASS, + imx_clk_mux_flags(dev, "pll3_bypass", base + 0x10, 16, 1, + pll3_bypass_sels, ARRAY_SIZE(pll3_bypass_sels), + CLK_SET_RATE_PARENT)); + clk_dm(IMX6UL_CLK_PLL3_USB_OTG, + imx_clk_gate(dev, "pll3_usb_otg", "pll3_bypass", base + 0x10, + 13)); + clk_dm(IMX6UL_CLK_PLL3_80M, + imx_clk_fixed_factor(dev, "pll3_80m", "pll3_usb_otg", 1, 6)); + clk_dm(IMX6UL_CLK_PLL3_60M, + imx_clk_fixed_factor(dev, "pll3_60m", "pll3_usb_otg", 1, 8)); + clk_dm(IMX6UL_CLK_PLL2_PFD0, + imx_clk_pfd("pll2_pfd0_352m", "pll2_bus", base + 0x100, 0)); + clk_dm(IMX6UL_CLK_PLL2_PFD1, + imx_clk_pfd("pll2_pfd1_594m", "pll2_bus", base + 0x100, 1)); + clk_dm(IMX6UL_CLK_PLL2_PFD2, + imx_clk_pfd("pll2_pfd2_396m", "pll2_bus", base + 0x100, 2)); + clk_dm(IMX6UL_CLK_PLL2_PFD3, + imx_clk_pfd("pll2_pfd3_396m", "pll2_bus", base + 0x100, 3)); + clk_dm(IMX6UL_CLK_PLL6, + imx_clk_pllv3(dev, IMX_PLLV3_ENET, "pll6", "osc", base + 0xe0, + 0x3)); + clk_dm(IMX6UL_CLK_PLL6_ENET, + imx_clk_gate(dev, "pll6_enet", "pll6", base + 0xe0, 13)); + + /* CCM clocks */ + base = dev_read_addr_ptr(dev); + if (!base) + return -EINVAL; + + clk_dm(IMX6UL_CLK_GPMI_SEL, + imx_clk_mux(dev, "gpmi_sel", base + 0x1c, 19, 1, gpmi_sels, + ARRAY_SIZE(gpmi_sels))); + clk_dm(IMX6UL_CLK_BCH_SEL, + imx_clk_mux(dev, "bch_sel", base + 0x1c, 18, 1, bch_sels, + ARRAY_SIZE(bch_sels))); + clk_dm(IMX6UL_CLK_USDHC1_SEL, + imx_clk_mux(dev, "usdhc1_sel", base + 0x1c, 16, 1, usdhc_sels, + ARRAY_SIZE(usdhc_sels))); + clk_dm(IMX6UL_CLK_USDHC2_SEL, + imx_clk_mux(dev, "usdhc2_sel", base + 0x1c, 17, 1, usdhc_sels, + ARRAY_SIZE(usdhc_sels))); + clk_dm(IMX6UL_CLK_ECSPI_SEL, + imx_clk_mux(dev, "ecspi_sel", base + 0x38, 18, 1, ecspi_sels, + ARRAY_SIZE(ecspi_sels))); + clk_dm(IMX6UL_CLK_UART_SEL, + imx_clk_mux(dev, "uart_sel", base + 0x24, 6, 1, uart_sels, + ARRAY_SIZE(uart_sels))); + clk_dm(IMX6UL_CLK_ENFC_SEL, + imx_clk_mux(dev, "enfc_sel", base + 0x2c, 15, 3, enfc_sels, + ARRAY_SIZE(enfc_sels))); + clk_dm(IMX6UL_CLK_PERCLK_SEL, + imx_clk_mux(dev, "perclk_sel", base + 0x1c, 6, 1, perclk_sels, + ARRAY_SIZE(perclk_sels))); + clk_dm(IMX6UL_CLK_PERIPH_PRE, + imx_clk_mux(dev, "periph_pre", base + 0x18, 18, 2, + periph_pre_sels, ARRAY_SIZE(periph_pre_sels))); + clk_dm(IMX6UL_CLK_PERIPH2_PRE, + imx_clk_mux(dev, "periph2_pre", base + 0x18, 21, 2, + periph2_pre_sels, ARRAY_SIZE(periph2_pre_sels))); + clk_dm(IMX6UL_CLK_PERIPH_CLK2_SEL, + imx_clk_mux(dev, "periph_clk2_sel", base + 0x18, 12, 2, + periph_clk2_sels, ARRAY_SIZE(periph_clk2_sels))); + clk_dm(IMX6UL_CLK_PERIPH2_CLK2_SEL, + imx_clk_mux(dev, "periph2_clk2_sel", base + 0x18, 20, 1, + periph2_clk2_sels, ARRAY_SIZE(periph2_clk2_sels))); + clk_dm(IMX6UL_CLK_PERIPH, + imx_clk_busy_mux(dev, "periph", base + 0x14, 25, 1, base + 0x48, + 5, periph_sels, ARRAY_SIZE(periph_sels))); + clk_dm(IMX6UL_CLK_AHB, + imx_clk_busy_divider(dev, "ahb", "periph", base + 0x14, 10, 3, + base + 0x48, 1)); + clk_dm(IMX6UL_CLK_PERIPH_CLK2, + imx_clk_divider(dev, "periph_clk2", "periph_clk2_sel", + base + 0x14, 27, 3)); + clk_dm(IMX6UL_CLK_PERIPH2_CLK2, + imx_clk_divider(dev, "periph2_clk2", "periph2_clk2_sel", + base + 0x14, 0, 3)); + clk_dm(IMX6UL_CLK_IPG, + imx_clk_divider(dev, "ipg", "ahb", base + 0x14, 8, 2)); + clk_dm(IMX6UL_CLK_ENFC_PRED, + imx_clk_divider(dev, "enfc_pred", "enfc_sel", base + 0x2c, 18, + 3)); + clk_dm(IMX6UL_CLK_ENFC_PODF, + imx_clk_divider(dev, "enfc_podf", "enfc_pred", base + 0x2c, 21, + 6)); + clk_dm(IMX6UL_CLK_GPMI_PODF, + imx_clk_divider(dev, "gpmi_podf", "gpmi_sel", base + 0x24, 22, + 3)); + clk_dm(IMX6UL_CLK_BCH_PODF, + imx_clk_divider(dev, "bch_podf", "bch_sel", base + 0x24, 19, 3)); + clk_dm(IMX6UL_CLK_PERCLK, + imx_clk_divider(dev, "perclk", "perclk_sel", base + 0x1c, 0, 6)); + clk_dm(IMX6UL_CLK_UART_PODF, + imx_clk_divider(dev, "uart_podf", "uart_sel", base + 0x24, 0, + 6)); + clk_dm(IMX6UL_CLK_USDHC1_PODF, + imx_clk_divider(dev, "usdhc1_podf", "usdhc1_sel", base + 0x24, + 11, 3)); + clk_dm(IMX6UL_CLK_USDHC2_PODF, + imx_clk_divider(dev, "usdhc2_podf", "usdhc2_sel", base + 0x24, + 16, 3)); + clk_dm(IMX6UL_CLK_ECSPI_PODF, + imx_clk_divider(dev, "ecspi_podf", "ecspi_sel", base + 0x38, 19, + 6)); + + clk_dm(IMX6UL_CLK_APBHDMA, + imx_clk_gate2(dev, "apbh_dma", "bch_podf", base + 0x68, 4)); + clk_dm(IMX6UL_CLK_ECSPI1, + imx_clk_gate2(dev, "ecspi1", "ecspi_podf", base + 0x6c, 0)); + clk_dm(IMX6UL_CLK_ECSPI2, + imx_clk_gate2(dev, "ecspi2", "ecspi_podf", base + 0x6c, 2)); + clk_dm(IMX6UL_CLK_ECSPI3, + imx_clk_gate2(dev, "ecspi3", "ecspi_podf", base + 0x6c, 4)); + clk_dm(IMX6UL_CLK_ECSPI4, + imx_clk_gate2(dev, "ecspi4", "ecspi_podf", base + 0x6c, 6)); + + clk_dm(IMX6UL_CLK_USBOH3, + imx_clk_gate2(dev, "usboh3", "ipg", base + 0x80, 0)); + clk_dm(IMX6UL_CLK_USDHC1, + imx_clk_gate2(dev, "usdhc1", "usdhc1_podf", base + 0x80, 2)); + clk_dm(IMX6UL_CLK_USDHC2, + imx_clk_gate2(dev, "usdhc2", "usdhc2_podf", base + 0x80, 4)); + + clk_dm(IMX6UL_CLK_UART1_IPG, + imx_clk_gate2(dev, "uart1_ipg", "ipg", base + 0x7c, 24)); + clk_dm(IMX6UL_CLK_UART1_SERIAL, + imx_clk_gate2(dev, "uart1_serial", "uart_podf", base + 0x7c, 24)); + clk_dm(IMX6UL_CLK_UART2_IPG, + imx_clk_gate2(dev, "uart2_ipg", "ipg", base + 0x68, 28)); + clk_dm(IMX6UL_CLK_UART2_SERIAL, + imx_clk_gate2(dev, "uart2_serial", "uart_podf", base + 0x68, 28)); + clk_dm(IMX6UL_CLK_UART3_IPG, + imx_clk_gate2(dev, "uart3_ipg", "ipg", base + 0x6c, 10)); + clk_dm(IMX6UL_CLK_UART3_SERIAL, + imx_clk_gate2(dev, "uart3_serial", "uart_podf", base + 0x6c, 10)); + clk_dm(IMX6UL_CLK_UART4_IPG, + imx_clk_gate2(dev, "uart4_ipg", "ipg", base + 0x6c, 24)); + clk_dm(IMX6UL_CLK_UART4_SERIAL, + imx_clk_gate2(dev, "uart4_serial", "uart_podf", base + 0x6c, 24)); + clk_dm(IMX6UL_CLK_UART5_IPG, + imx_clk_gate2(dev, "uart5_ipg", "ipg", base + 0x74, 2)); + clk_dm(IMX6UL_CLK_UART5_SERIAL, + imx_clk_gate2(dev, "uart5_serial", "uart_podf", base + 0x74, 2)); + clk_dm(IMX6UL_CLK_UART6_IPG, + imx_clk_gate2(dev, "uart6_ipg", "ipg", base + 0x74, 6)); + clk_dm(IMX6UL_CLK_UART6_SERIAL, + imx_clk_gate2(dev, "uart6_serial", "uart_podf", base + 0x74, 6)); + clk_dm(IMX6UL_CLK_UART7_IPG, + imx_clk_gate2(dev, "uart7_ipg", "ipg", base + 0x7c, 26)); + clk_dm(IMX6UL_CLK_UART7_SERIAL, + imx_clk_gate2(dev, "uart7_serial", "uart_podf", base + 0x7c, 26)); + clk_dm(IMX6UL_CLK_UART8_IPG, + imx_clk_gate2(dev, "uart8_ipg", "ipg", base + 0x80, 14)); + clk_dm(IMX6UL_CLK_UART8_SERIAL, + imx_clk_gate2(dev, "uart8_serial", "uart_podf", base + 0x80, 14)); + +#if CONFIG_IS_ENABLED(NAND_MXS) + clk_dm(IMX6UL_CLK_PER_BCH, + imx_clk_gate2(dev, "per_bch", "bch_podf", base + 0x78, 12)); + clk_dm(IMX6UL_CLK_GPMI_BCH_APB, + imx_clk_gate2(dev, "gpmi_bch_apb", "bch_podf", base + 0x78, 24)); + clk_dm(IMX6UL_CLK_GPMI_BCH, + imx_clk_gate2(dev, "gpmi_bch", "gpmi_podf", base + 0x78, 26)); + clk_dm(IMX6UL_CLK_GPMI_IO, + imx_clk_gate2(dev, "gpmi_io", "enfc_podf", base + 0x78, 28)); + clk_dm(IMX6UL_CLK_GPMI_APB, + imx_clk_gate2(dev, "gpmi_apb", "bch_podf", base + 0x78, 30)); +#endif + clk_dm(IMX6UL_CLK_IPG, + imx_clk_divider(dev, "ipg", "ahb", base + 0x14, 8, 2)); + clk_dm(IMX6UL_CLK_I2C1, + imx_clk_gate2(dev, "i2c1", "perclk", base + 0x70, 6)); + clk_dm(IMX6UL_CLK_I2C2, + imx_clk_gate2(dev, "i2c2", "perclk", base + 0x70, 8)); + clk_dm(IMX6UL_CLK_I2C3, + imx_clk_gate2(dev, "i2c3", "perclk", base + 0x70, 10)); + clk_dm(IMX6UL_CLK_PWM1, + imx_clk_gate2(dev, "pwm1", "perclk", base + 0x78, 16)); + + clk_dm(IMX6UL_CLK_ENET, + imx_clk_gate2(dev, "enet", "ipg", base + 0x6c, 10)); + clk_dm(IMX6UL_CLK_ENET_REF, + imx_clk_fixed_factor(dev, "enet_ref", "pll6_enet", 1, 1)); + + struct clk *clk, *clk1; + + clk_get_by_id(IMX6UL_CLK_ENFC_SEL, &clk); + clk_get_by_id(IMX6UL_CLK_PLL2_PFD2, &clk1); + + clk_set_parent(clk, clk1); + + return 0; +} + +static const struct udevice_id imx6ul_clk_ids[] = { + {.compatible = "fsl,imx6ul-ccm" }, + { }, +}; + +U_BOOT_DRIVER(imx6ul_clk) = { + .name = "clk_imx6ul", + .id = UCLASS_CLK, + .of_match = imx6ul_clk_ids, + .ops = &imx6ul_clk_ops, + .probe = imx6ul_clk_probe, + .flags = DM_FLAG_PRE_RELOC, +};