clk: imx8: add i.MX8QM clk driver

Add i.MX8QM clk driver, SDHC/FEC/UART/I2C supported.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

3 files changed, 309 insertions, 0 deletions

diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
index d07d91b88f..eb379c188a 100644
--- a/drivers/clk/imx/Makefile
+++ b/drivers/clk/imx/Makefile
@@ -6,4 +6,5 @@ obj-$(CONFIG_CLK_IMX8) += clk-imx8.o
 
 ifdef CONFIG_CLK_IMX8
 obj-$(CONFIG_IMX8QXP) += clk-imx8qxp.o
+obj-$(CONFIG_IMX8QM) += clk-imx8qm.o
 endif
diff --git a/drivers/clk/imx/clk-imx8.c b/drivers/clk/imx/clk-imx8.c
index c69a9ed867..a755e26501 100644
--- a/drivers/clk/imx/clk-imx8.c
+++ b/drivers/clk/imx/clk-imx8.c
@@ -101,6 +101,7 @@ static int imx8_clk_probe(struct udevice *dev)
 
 static const struct udevice_id imx8_clk_ids[] = {
 	{ .compatible = "fsl,imx8qxp-clk" },
+	{ .compatible = "fsl,imx8qm-clk" },
 	{ },
 };
 
diff --git a/drivers/clk/imx/clk-imx8qm.c b/drivers/clk/imx/clk-imx8qm.c
new file mode 100644
index 0000000000..6b5561e178
--- /dev/null
+++ b/drivers/clk/imx/clk-imx8qm.c
@@ -0,0 +1,307 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2018 NXP
+ * Peng Fan <peng.fan@nxp.com>
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <asm/arch/sci/sci.h>
+#include <asm/arch/clock.h>
+#include <dt-bindings/clock/imx8qm-clock.h>
+#include <dt-bindings/soc/imx_rsrc.h>
+#include <misc.h>
+
+#include "clk-imx8.h"
+
+#if CONFIG_IS_ENABLED(CMD_CLK)
+struct imx8_clks imx8_clk_names[] = {
+	{ IMX8QM_A53_DIV, "A53_DIV" },
+	{ IMX8QM_UART0_CLK, "UART0" },
+	{ IMX8QM_UART1_CLK, "UART1" },
+	{ IMX8QM_UART2_CLK, "UART2" },
+	{ IMX8QM_UART3_CLK, "UART3" },
+	{ IMX8QM_SDHC0_CLK, "SDHC0" },
+	{ IMX8QM_SDHC1_CLK, "SDHC1" },
+	{ IMX8QM_SDHC2_CLK, "SDHC2" },
+	{ IMX8QM_ENET0_AHB_CLK, "ENET0_AHB" },
+	{ IMX8QM_ENET0_IPG_CLK, "ENET0_IPG" },
+	{ IMX8QM_ENET0_REF_DIV, "ENET0_REF" },
+	{ IMX8QM_ENET0_PTP_CLK, "ENET0_PTP" },
+	{ IMX8QM_ENET1_AHB_CLK, "ENET1_AHB" },
+	{ IMX8QM_ENET1_IPG_CLK, "ENET1_IPG" },
+	{ IMX8QM_ENET1_REF_DIV, "ENET1_REF" },
+	{ IMX8QM_ENET1_PTP_CLK, "ENET1_PTP" },
+};
+
+int num_clks = ARRAY_SIZE(imx8_clk_names);
+#endif
+
+ulong imx8_clk_get_rate(struct clk *clk)
+{
+	sc_pm_clk_t pm_clk;
+	ulong rate;
+	u16 resource;
+	int ret;
+
+	debug("%s(#%lu)\n", __func__, clk->id);
+
+	switch (clk->id) {
+	case IMX8QM_A53_DIV:
+		resource = SC_R_A53;
+		pm_clk = SC_PM_CLK_CPU;
+		break;
+	case IMX8QM_I2C0_CLK:
+		resource = SC_R_I2C_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_I2C1_CLK:
+		resource = SC_R_I2C_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_I2C2_CLK:
+		resource = SC_R_I2C_2;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_I2C3_CLK:
+		resource = SC_R_I2C_3;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_SDHC0_IPG_CLK:
+	case IMX8QM_SDHC0_CLK:
+	case IMX8QM_SDHC0_DIV:
+		resource = SC_R_SDHC_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_SDHC1_IPG_CLK:
+	case IMX8QM_SDHC1_CLK:
+	case IMX8QM_SDHC1_DIV:
+		resource = SC_R_SDHC_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART0_IPG_CLK:
+	case IMX8QM_UART0_CLK:
+		resource = SC_R_UART_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART1_CLK:
+		resource = SC_R_UART_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART2_CLK:
+		resource = SC_R_UART_2;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART3_CLK:
+		resource = SC_R_UART_3;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_ENET0_IPG_CLK:
+	case IMX8QM_ENET0_AHB_CLK:
+	case IMX8QM_ENET0_REF_DIV:
+	case IMX8QM_ENET0_PTP_CLK:
+		resource = SC_R_ENET_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_ENET1_IPG_CLK:
+	case IMX8QM_ENET1_AHB_CLK:
+	case IMX8QM_ENET1_REF_DIV:
+	case IMX8QM_ENET1_PTP_CLK:
+		resource = SC_R_ENET_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	default:
+		if (clk->id < IMX8QM_UART0_IPG_CLK ||
+		    clk->id >= IMX8QM_CLK_END) {
+			printf("%s(Invalid clk ID #%lu)\n",
+			       __func__, clk->id);
+			return -EINVAL;
+		}
+		return -ENOTSUPP;
+	};
+
+	ret = sc_pm_get_clock_rate(-1, resource, pm_clk,
+				   (sc_pm_clock_rate_t *)&rate);
+	if (ret) {
+		printf("%s err %d\n", __func__, ret);
+		return ret;
+	}
+
+	return rate;
+}
+
+ulong imx8_clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	sc_pm_clk_t pm_clk;
+	u32 new_rate = rate;
+	u16 resource;
+	int ret;
+
+	debug("%s(#%lu), rate: %lu\n", __func__, clk->id, rate);
+
+	switch (clk->id) {
+	case IMX8QM_I2C0_CLK:
+		resource = SC_R_I2C_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_I2C1_CLK:
+		resource = SC_R_I2C_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_I2C2_CLK:
+		resource = SC_R_I2C_2;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_I2C3_CLK:
+		resource = SC_R_I2C_3;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART0_CLK:
+		resource = SC_R_UART_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART1_CLK:
+		resource = SC_R_UART_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART2_CLK:
+		resource = SC_R_UART_2;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART3_CLK:
+		resource = SC_R_UART_3;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_SDHC0_IPG_CLK:
+	case IMX8QM_SDHC0_CLK:
+	case IMX8QM_SDHC0_DIV:
+		resource = SC_R_SDHC_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_SDHC1_IPG_CLK:
+	case IMX8QM_SDHC1_CLK:
+	case IMX8QM_SDHC1_DIV:
+		resource = SC_R_SDHC_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_ENET0_IPG_CLK:
+	case IMX8QM_ENET0_AHB_CLK:
+	case IMX8QM_ENET0_REF_DIV:
+	case IMX8QM_ENET0_PTP_CLK:
+	case IMX8QM_ENET0_ROOT_DIV:
+		resource = SC_R_ENET_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_ENET1_IPG_CLK:
+	case IMX8QM_ENET1_AHB_CLK:
+	case IMX8QM_ENET1_REF_DIV:
+	case IMX8QM_ENET1_PTP_CLK:
+	case IMX8QM_ENET1_ROOT_DIV:
+		resource = SC_R_ENET_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	default:
+		if (clk->id < IMX8QM_UART0_IPG_CLK ||
+		    clk->id >= IMX8QM_CLK_END) {
+			printf("%s(Invalid clk ID #%lu)\n",
+			       __func__, clk->id);
+			return -EINVAL;
+		}
+		return -ENOTSUPP;
+	};
+
+	ret = sc_pm_set_clock_rate(-1, resource, pm_clk, &new_rate);
+	if (ret) {
+		printf("%s err %d\n", __func__, ret);
+		return ret;
+	}
+
+	return new_rate;
+}
+
+int __imx8_clk_enable(struct clk *clk, bool enable)
+{
+	sc_pm_clk_t pm_clk;
+	u16 resource;
+	int ret;
+
+	debug("%s(#%lu)\n", __func__, clk->id);
+
+	switch (clk->id) {
+	case IMX8QM_I2C0_CLK:
+		resource = SC_R_I2C_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_I2C1_CLK:
+		resource = SC_R_I2C_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_I2C2_CLK:
+		resource = SC_R_I2C_2;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_I2C3_CLK:
+		resource = SC_R_I2C_3;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART0_CLK:
+		resource = SC_R_UART_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART1_CLK:
+		resource = SC_R_UART_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART2_CLK:
+		resource = SC_R_UART_2;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_UART3_CLK:
+		resource = SC_R_UART_3;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_SDHC0_IPG_CLK:
+	case IMX8QM_SDHC0_CLK:
+	case IMX8QM_SDHC0_DIV:
+		resource = SC_R_SDHC_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_SDHC1_IPG_CLK:
+	case IMX8QM_SDHC1_CLK:
+	case IMX8QM_SDHC1_DIV:
+		resource = SC_R_SDHC_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_ENET0_IPG_CLK:
+	case IMX8QM_ENET0_AHB_CLK:
+	case IMX8QM_ENET0_REF_DIV:
+	case IMX8QM_ENET0_PTP_CLK:
+		resource = SC_R_ENET_0;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	case IMX8QM_ENET1_IPG_CLK:
+	case IMX8QM_ENET1_AHB_CLK:
+	case IMX8QM_ENET1_REF_DIV:
+	case IMX8QM_ENET1_PTP_CLK:
+		resource = SC_R_ENET_1;
+		pm_clk = SC_PM_CLK_PER;
+		break;
+	default:
+		if (clk->id < IMX8QM_UART0_IPG_CLK ||
+		    clk->id >= IMX8QM_CLK_END) {
+			printf("%s(Invalid clk ID #%lu)\n",
+			       __func__, clk->id);
+			return -EINVAL;
+		}
+		return -ENOTSUPP;
+	}
+
+	ret = sc_pm_clock_enable(-1, resource, pm_clk, enable, 0);
+	if (ret) {
+		printf("%s err %d\n", __func__, ret);
+		return ret;
+	}
+
+	return 0;
+}