Add i.MX6UL clk driver for i.MX6UL CLK driver model usage
Reviewed-by: Peng Fan <peng....@nxp.com>
Signed-off-by: Michael Trimarchi <mich...@amarulasolutions.com>
---
Changes in v2:
- Add review tag
drivers/clk/imx/Kconfig | 8 ++
drivers/clk/imx/Makefile | 1 +
drivers/clk/imx/clk-imx6ul.c | 270 +++++++++++++++++++++++++++++++++++
3 files changed, 279 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..941c9352248
--- /dev/null
+++ b/drivers/clk/imx/clk-imx6ul.c
@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Amarula Solutions Software Engineering
+ * Michael Trimarchi, Amarula Solutions Software Engineering,
mich...@amarulasolutions.com
+ */
+
+#include <clk-uclass.h>
+#include <dm.h>
+#include <log.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <dt-bindings/clock/imx6ul-clock.h>
+
+#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));
+
+ clk_dm(IMX6UL_CLK_PLL2,
+ imx_clk_pllv3(dev, IMX_PLLV3_GENERIC, "pll2_bus", "osc",
+ base + 0x30, 0x1));
+ clk_dm(IMX6UL_CLK_PLL3_USB_OTG,
+ imx_clk_pllv3(dev, IMX_PLLV3_USB, "pll3_bypass", "osc",
+ base + 0x10, 0x3));
+ clk_dm(IMX6UL_CLK_PLL3,
+ imx_clk_pllv3(dev, IMX_PLLV3_USB, "pll3", "osc",
+ base + 0x10, 0x3));
+
+ 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));
+ 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));
+
+ 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));
+
+ /* 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_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));
+
+#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,
+};
--
2.43.0
base-commit: df2ed552f0b05591090369a7fe7ddc92439dea5c
