diff options
Diffstat (limited to 'drivers/clk/imx/clk-imx8qxp-lpcg.c')
| -rw-r--r-- | drivers/clk/imx/clk-imx8qxp-lpcg.c | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/drivers/clk/imx/clk-imx8qxp-lpcg.c b/drivers/clk/imx/clk-imx8qxp-lpcg.c new file mode 100644 index 000000000..5e31a6a24 --- /dev/null +++ b/drivers/clk/imx/clk-imx8qxp-lpcg.c @@ -0,0 +1,377 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2018 NXP + * Dong Aisheng <aisheng.dong@nxp.com> + */ + +#include <linux/clk-provider.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> + +#include "clk-scu.h" +#include "clk-imx8qxp-lpcg.h" + +#include <dt-bindings/clock/imx8-clock.h> + +/* + * struct imx8qxp_lpcg_data - Description of one LPCG clock + * @id: clock ID + * @name: clock name + * @parent: parent clock name + * @flags: common clock flags + * @offset: offset of this LPCG clock + * @bit_idx: bit index of this LPCG clock + * @hw_gate: whether supports HW autogate + * + * This structure describes one LPCG clock + */ +struct imx8qxp_lpcg_data { + int id; + char *name; + char *parent; + unsigned long flags; + u32 offset; + u8 bit_idx; + bool hw_gate; +}; + +/* + * struct imx8qxp_ss_lpcg - Description of one subsystem LPCG clocks + * @lpcg: LPCG clocks array of one subsystem + * @num_lpcg: the number of LPCG clocks + * @num_max: the maximum number of LPCG clocks + * + * This structure describes each subsystem LPCG clocks information + * which then will be used to create respective LPCGs clocks + */ +struct imx8qxp_ss_lpcg { + const struct imx8qxp_lpcg_data *lpcg; + u8 num_lpcg; + u8 num_max; +}; + +static const struct imx8qxp_lpcg_data imx8qxp_lpcg_adma[] = { + { IMX_ADMA_LPCG_UART0_IPG_CLK, "uart0_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_LPUART_0_LPCG, 16, 0, }, + { IMX_ADMA_LPCG_UART0_BAUD_CLK, "uart0_lpcg_baud_clk", "uart0_clk", 0, ADMA_LPUART_0_LPCG, 0, 0, }, + { IMX_ADMA_LPCG_UART1_IPG_CLK, "uart1_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_LPUART_1_LPCG, 16, 0, }, + { IMX_ADMA_LPCG_UART1_BAUD_CLK, "uart1_lpcg_baud_clk", "uart1_clk", 0, ADMA_LPUART_1_LPCG, 0, 0, }, + { IMX_ADMA_LPCG_UART2_IPG_CLK, "uart2_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_LPUART_2_LPCG, 16, 0, }, + { IMX_ADMA_LPCG_UART2_BAUD_CLK, "uart2_lpcg_baud_clk", "uart2_clk", 0, ADMA_LPUART_2_LPCG, 0, 0, }, + { IMX_ADMA_LPCG_UART3_IPG_CLK, "uart3_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_LPUART_3_LPCG, 16, 0, }, + { IMX_ADMA_LPCG_UART3_BAUD_CLK, "uart3_lpcg_baud_clk", "uart3_clk", 0, ADMA_LPUART_3_LPCG, 0, 0, }, + { IMX_ADMA_LPCG_I2C0_IPG_CLK, "i2c0_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_LPI2C_0_LPCG, 16, 0, }, + { IMX_ADMA_LPCG_I2C0_CLK, "i2c0_lpcg_clk", "i2c0_clk", 0, ADMA_LPI2C_0_LPCG, 0, 0, }, + { IMX_ADMA_LPCG_I2C1_IPG_CLK, "i2c1_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_LPI2C_1_LPCG, 16, 0, }, + { IMX_ADMA_LPCG_I2C1_CLK, "i2c1_lpcg_clk", "i2c1_clk", 0, ADMA_LPI2C_1_LPCG, 0, 0, }, + { IMX_ADMA_LPCG_I2C2_IPG_CLK, "i2c2_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_LPI2C_2_LPCG, 16, 0, }, + { IMX_ADMA_LPCG_I2C2_CLK, "i2c2_lpcg_clk", "i2c2_clk", 0, ADMA_LPI2C_2_LPCG, 0, 0, }, + { IMX_ADMA_LPCG_I2C3_IPG_CLK, "i2c3_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_LPI2C_3_LPCG, 16, 0, }, + { IMX_ADMA_LPCG_I2C3_CLK, "i2c3_lpcg_clk", "i2c3_clk", 0, ADMA_LPI2C_3_LPCG, 0, 0, }, + + { IMX_ADMA_LPCG_DSP_CORE_CLK, "dsp_lpcg_core_clk", "dma_ipg_clk_root", 0, ADMA_HIFI_LPCG, 28, 0, }, + { IMX_ADMA_LPCG_DSP_IPG_CLK, "dsp_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_HIFI_LPCG, 20, 0, }, + { IMX_ADMA_LPCG_DSP_ADB_CLK, "dsp_lpcg_adb_clk", "dma_ipg_clk_root", 0, ADMA_HIFI_LPCG, 16, 0, }, + { IMX_ADMA_LPCG_OCRAM_IPG_CLK, "ocram_lpcg_ipg_clk", "dma_ipg_clk_root", 0, ADMA_OCRAM_LPCG, 16, 0, }, +}; + +static const struct imx8qxp_ss_lpcg imx8qxp_ss_adma = { + .lpcg = imx8qxp_lpcg_adma, + .num_lpcg = ARRAY_SIZE(imx8qxp_lpcg_adma), + .num_max = IMX_ADMA_LPCG_CLK_END, +}; + +static const struct imx8qxp_lpcg_data imx8qxp_lpcg_conn[] = { + { IMX_CONN_LPCG_SDHC0_PER_CLK, "sdhc0_lpcg_per_clk", "sdhc0_clk", 0, CONN_USDHC_0_LPCG, 0, 0, }, + { IMX_CONN_LPCG_SDHC0_IPG_CLK, "sdhc0_lpcg_ipg_clk", "conn_ipg_clk_root", 0, CONN_USDHC_0_LPCG, 16, 0, }, + { IMX_CONN_LPCG_SDHC0_HCLK, "sdhc0_lpcg_ahb_clk", "conn_axi_clk_root", 0, CONN_USDHC_0_LPCG, 20, 0, }, + { IMX_CONN_LPCG_SDHC1_PER_CLK, "sdhc1_lpcg_per_clk", "sdhc1_clk", 0, CONN_USDHC_1_LPCG, 0, 0, }, + { IMX_CONN_LPCG_SDHC1_IPG_CLK, "sdhc1_lpcg_ipg_clk", "conn_ipg_clk_root", 0, CONN_USDHC_1_LPCG, 16, 0, }, + { IMX_CONN_LPCG_SDHC1_HCLK, "sdhc1_lpcg_ahb_clk", "conn_axi_clk_root", 0, CONN_USDHC_1_LPCG, 20, 0, }, + { IMX_CONN_LPCG_SDHC2_PER_CLK, "sdhc2_lpcg_per_clk", "sdhc2_clk", 0, CONN_USDHC_2_LPCG, 0, 0, }, + { IMX_CONN_LPCG_SDHC2_IPG_CLK, "sdhc2_lpcg_ipg_clk", "conn_ipg_clk_root", 0, CONN_USDHC_2_LPCG, 16, 0, }, + { IMX_CONN_LPCG_SDHC2_HCLK, "sdhc2_lpcg_ahb_clk", "conn_axi_clk_root", 0, CONN_USDHC_2_LPCG, 20, 0, }, + { IMX_CONN_LPCG_ENET0_ROOT_CLK, "enet0_ipg_root_clk", "enet0_clk", 0, CONN_ENET_0_LPCG, 0, 0, }, + { IMX_CONN_LPCG_ENET0_TX_CLK, "enet0_tx_clk", "enet0_clk", 0, CONN_ENET_0_LPCG, 4, 0, }, + { IMX_CONN_LPCG_ENET0_AHB_CLK, "enet0_ahb_clk", "conn_axi_clk_root", 0, CONN_ENET_0_LPCG, 8, 0, }, + { IMX_CONN_LPCG_ENET0_IPG_S_CLK, "enet0_ipg_s_clk", "conn_ipg_clk_root", 0, CONN_ENET_0_LPCG, 20, 0, }, + { IMX_CONN_LPCG_ENET0_IPG_CLK, "enet0_ipg_clk", "enet0_ipg_s_clk", 0, CONN_ENET_0_LPCG, 16, 0, }, + { IMX_CONN_LPCG_ENET1_ROOT_CLK, "enet1_ipg_root_clk", "enet1_clk", 0, CONN_ENET_1_LPCG, 0, 0, }, + { IMX_CONN_LPCG_ENET1_TX_CLK, "enet1_tx_clk", "enet1_clk", 0, CONN_ENET_1_LPCG, 4, 0, }, + { IMX_CONN_LPCG_ENET1_AHB_CLK, "enet1_ahb_clk", "conn_axi_clk_root", 0, CONN_ENET_1_LPCG, 8, 0, }, + { IMX_CONN_LPCG_ENET1_IPG_S_CLK, "enet1_ipg_s_clk", "conn_ipg_clk_root", 0, CONN_ENET_1_LPCG, 20, 0, }, + { IMX_CONN_LPCG_ENET1_IPG_CLK, "enet1_ipg_clk", "enet0_ipg_s_clk", 0, CONN_ENET_1_LPCG, 16, 0, }, +}; + +static const struct imx8qxp_ss_lpcg imx8qxp_ss_conn = { + .lpcg = imx8qxp_lpcg_conn, + .num_lpcg = ARRAY_SIZE(imx8qxp_lpcg_conn), + .num_max = IMX_CONN_LPCG_CLK_END, +}; + +static const struct imx8qxp_lpcg_data imx8qxp_lpcg_lsio[] = { + { IMX_LSIO_LPCG_PWM0_IPG_CLK, "pwm0_lpcg_ipg_clk", "pwm0_clk", 0, LSIO_PWM_0_LPCG, 0, 0, }, + { IMX_LSIO_LPCG_PWM0_IPG_HF_CLK, "pwm0_lpcg_ipg_hf_clk", "pwm0_clk", 0, LSIO_PWM_0_LPCG, 4, 0, }, + { IMX_LSIO_LPCG_PWM0_IPG_S_CLK, "pwm0_lpcg_ipg_s_clk", "pwm0_clk", 0, LSIO_PWM_0_LPCG, 16, 0, }, + { IMX_LSIO_LPCG_PWM0_IPG_SLV_CLK, "pwm0_lpcg_ipg_slv_clk", "lsio_bus_clk_root", 0, LSIO_PWM_0_LPCG, 20, 0, }, + { IMX_LSIO_LPCG_PWM0_IPG_MSTR_CLK, "pwm0_lpcg_ipg_mstr_clk", "pwm0_clk", 0, LSIO_PWM_0_LPCG, 24, 0, }, + { IMX_LSIO_LPCG_PWM1_IPG_CLK, "pwm1_lpcg_ipg_clk", "pwm1_clk", 0, LSIO_PWM_1_LPCG, 0, 0, }, + { IMX_LSIO_LPCG_PWM1_IPG_HF_CLK, "pwm1_lpcg_ipg_hf_clk", "pwm1_clk", 0, LSIO_PWM_1_LPCG, 4, 0, }, + { IMX_LSIO_LPCG_PWM1_IPG_S_CLK, "pwm1_lpcg_ipg_s_clk", "pwm1_clk", 0, LSIO_PWM_1_LPCG, 16, 0, }, + { IMX_LSIO_LPCG_PWM1_IPG_SLV_CLK, "pwm1_lpcg_ipg_slv_clk", "lsio_bus_clk_root", 0, LSIO_PWM_1_LPCG, 20, 0, }, + { IMX_LSIO_LPCG_PWM1_IPG_MSTR_CLK, "pwm1_lpcg_ipg_mstr_clk", "pwm1_clk", 0, LSIO_PWM_1_LPCG, 24, 0, }, + { IMX_LSIO_LPCG_PWM2_IPG_CLK, "pwm2_lpcg_ipg_clk", "pwm2_clk", 0, LSIO_PWM_2_LPCG, 0, 0, }, + { IMX_LSIO_LPCG_PWM2_IPG_HF_CLK, "pwm2_lpcg_ipg_hf_clk", "pwm2_clk", 0, LSIO_PWM_2_LPCG, 4, 0, }, + { IMX_LSIO_LPCG_PWM2_IPG_S_CLK, "pwm2_lpcg_ipg_s_clk", "pwm2_clk", 0, LSIO_PWM_2_LPCG, 16, 0, }, + { IMX_LSIO_LPCG_PWM2_IPG_SLV_CLK, "pwm2_lpcg_ipg_slv_clk", "lsio_bus_clk_root", 0, LSIO_PWM_2_LPCG, 20, 0, }, + { IMX_LSIO_LPCG_PWM2_IPG_MSTR_CLK, "pwm2_lpcg_ipg_mstr_clk", "pwm2_clk", 0, LSIO_PWM_2_LPCG, 24, 0, }, + { IMX_LSIO_LPCG_PWM3_IPG_CLK, "pwm3_lpcg_ipg_clk", "pwm3_clk", 0, LSIO_PWM_3_LPCG, 0, 0, }, + { IMX_LSIO_LPCG_PWM3_IPG_HF_CLK, "pwm3_lpcg_ipg_hf_clk", "pwm3_clk", 0, LSIO_PWM_3_LPCG, 4, 0, }, + { IMX_LSIO_LPCG_PWM3_IPG_S_CLK, "pwm3_lpcg_ipg_s_clk", "pwm3_clk", 0, LSIO_PWM_3_LPCG, 16, 0, }, + { IMX_LSIO_LPCG_PWM3_IPG_SLV_CLK, "pwm3_lpcg_ipg_slv_clk", "lsio_bus_clk_root", 0, LSIO_PWM_3_LPCG, 20, 0, }, + { IMX_LSIO_LPCG_PWM3_IPG_MSTR_CLK, "pwm3_lpcg_ipg_mstr_clk", "pwm3_clk", 0, LSIO_PWM_3_LPCG, 24, 0, }, + { IMX_LSIO_LPCG_PWM4_IPG_CLK, "pwm4_lpcg_ipg_clk", "pwm4_clk", 0, LSIO_PWM_4_LPCG, 0, 0, }, + { IMX_LSIO_LPCG_PWM4_IPG_HF_CLK, "pwm4_lpcg_ipg_hf_clk", "pwm4_clk", 0, LSIO_PWM_4_LPCG, 4, 0, }, + { IMX_LSIO_LPCG_PWM4_IPG_S_CLK, "pwm4_lpcg_ipg_s_clk", "pwm4_clk", 0, LSIO_PWM_4_LPCG, 16, 0, }, + { IMX_LSIO_LPCG_PWM4_IPG_SLV_CLK, "pwm4_lpcg_ipg_slv_clk", "lsio_bus_clk_root", 0, LSIO_PWM_4_LPCG, 20, 0, }, + { IMX_LSIO_LPCG_PWM4_IPG_MSTR_CLK, "pwm4_lpcg_ipg_mstr_clk", "pwm4_clk", 0, LSIO_PWM_4_LPCG, 24, 0, }, + { IMX_LSIO_LPCG_PWM5_IPG_CLK, "pwm5_lpcg_ipg_clk", "pwm5_clk", 0, LSIO_PWM_5_LPCG, 0, 0, }, + { IMX_LSIO_LPCG_PWM5_IPG_HF_CLK, "pwm5_lpcg_ipg_hf_clk", "pwm5_clk", 0, LSIO_PWM_5_LPCG, 4, 0, }, + { IMX_LSIO_LPCG_PWM5_IPG_S_CLK, "pwm5_lpcg_ipg_s_clk", "pwm5_clk", 0, LSIO_PWM_5_LPCG, 16, 0, }, + { IMX_LSIO_LPCG_PWM5_IPG_SLV_CLK, "pwm5_lpcg_ipg_slv_clk", "lsio_bus_clk_root", 0, LSIO_PWM_5_LPCG, 20, 0, }, + { IMX_LSIO_LPCG_PWM5_IPG_MSTR_CLK, "pwm5_lpcg_ipg_mstr_clk", "pwm5_clk", 0, LSIO_PWM_5_LPCG, 24, 0, }, + { IMX_LSIO_LPCG_PWM6_IPG_CLK, "pwm6_lpcg_ipg_clk", "pwm6_clk", 0, LSIO_PWM_6_LPCG, 0, 0, }, + { IMX_LSIO_LPCG_PWM6_IPG_HF_CLK, "pwm6_lpcg_ipg_hf_clk", "pwm6_clk", 0, LSIO_PWM_6_LPCG, 4, 0, }, + { IMX_LSIO_LPCG_PWM6_IPG_S_CLK, "pwm6_lpcg_ipg_s_clk", "pwm6_clk", 0, LSIO_PWM_6_LPCG, 16, 0, }, + { IMX_LSIO_LPCG_PWM6_IPG_SLV_CLK, "pwm6_lpcg_ipg_slv_clk", "lsio_bus_clk_root", 0, LSIO_PWM_6_LPCG, 20, 0, }, + { IMX_LSIO_LPCG_PWM6_IPG_MSTR_CLK, "pwm6_lpcg_ipg_mstr_clk", "pwm6_clk", 0, LSIO_PWM_6_LPCG, 24, 0, }, +}; + +static const struct imx8qxp_ss_lpcg imx8qxp_ss_lsio = { + .lpcg = imx8qxp_lpcg_lsio, + .num_lpcg = ARRAY_SIZE(imx8qxp_lpcg_lsio), + .num_max = IMX_LSIO_LPCG_CLK_END, +}; + +#define IMX_LPCG_MAX_CLKS 8 + +static struct clk_hw *imx_lpcg_of_clk_src_get(struct of_phandle_args *clkspec, + void *data) +{ + struct clk_hw_onecell_data *hw_data = data; + unsigned int idx = clkspec->args[0] / 4; + + if (idx >= hw_data->num) { + pr_err("%s: invalid index %u\n", __func__, idx); + return ERR_PTR(-EINVAL); + } + + return hw_data->hws[idx]; +} + +static int imx_lpcg_parse_clks_from_dt(struct platform_device *pdev, + struct device_node *np) +{ + const char *output_names[IMX_LPCG_MAX_CLKS]; + const char *parent_names[IMX_LPCG_MAX_CLKS]; + unsigned int bit_offset[IMX_LPCG_MAX_CLKS]; + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clk_hws; + struct resource *res; + void __iomem *base; + int count; + int idx; + int ret; + int i; + + if (!of_device_is_compatible(np, "fsl,imx8qxp-lpcg")) + return -EINVAL; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + count = of_property_count_u32_elems(np, "clock-indices"); + if (count < 0) { + dev_err(&pdev->dev, "failed to count clocks\n"); + return -EINVAL; + } + + /* + * A trick here is that we set the num of clks to the MAX instead + * of the count from clock-indices because one LPCG supports up to + * 8 clock outputs which each of them is fixed to 4 bits. Then we can + * easily get the clock by clk-indices (bit-offset) / 4. + * And the cost is very limited few pointers. + */ + + clk_data = devm_kzalloc(&pdev->dev, struct_size(clk_data, hws, + IMX_LPCG_MAX_CLKS), GFP_KERNEL); + if (!clk_data) + return -ENOMEM; + + clk_data->num = IMX_LPCG_MAX_CLKS; + clk_hws = clk_data->hws; + + ret = of_property_read_u32_array(np, "clock-indices", bit_offset, + count); + if (ret < 0) { + dev_err(&pdev->dev, "failed to read clock-indices\n"); + return -EINVAL; + } + + ret = of_clk_parent_fill(np, parent_names, count); + if (ret != count) { + dev_err(&pdev->dev, "failed to get clock parent names\n"); + return count; + } + + ret = of_property_read_string_array(np, "clock-output-names", + output_names, count); + if (ret != count) { + dev_err(&pdev->dev, "failed to read clock-output-names\n"); + return -EINVAL; + } + + pm_runtime_get_noresume(&pdev->dev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, 500); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + for (i = 0; i < count; i++) { + idx = bit_offset[i] / 4; + if (idx >= IMX_LPCG_MAX_CLKS) { + dev_warn(&pdev->dev, "invalid bit offset of clock %d\n", + i); + ret = -EINVAL; + goto unreg; + } + + clk_hws[idx] = imx_clk_lpcg_scu_dev(&pdev->dev, output_names[i], + parent_names[i], 0, base, + bit_offset[i], false); + if (IS_ERR(clk_hws[idx])) { + dev_warn(&pdev->dev, "failed to register clock %d\n", + idx); + ret = PTR_ERR(clk_hws[idx]); + goto unreg; + } + } + + ret = devm_of_clk_add_hw_provider(&pdev->dev, imx_lpcg_of_clk_src_get, + clk_data); + if (ret) + goto unreg; + + pm_runtime_mark_last_busy(&pdev->dev); + pm_runtime_put_autosuspend(&pdev->dev); + + return 0; + +unreg: + while (--i >= 0) { + idx = bit_offset[i] / 4; + if (clk_hws[idx]) + imx_clk_lpcg_scu_unregister(clk_hws[idx]); + } + + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static int imx8qxp_lpcg_clk_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct clk_hw_onecell_data *clk_data; + const struct imx8qxp_ss_lpcg *ss_lpcg; + const struct imx8qxp_lpcg_data *lpcg; + struct resource *res; + struct clk_hw **clks; + void __iomem *base; + int ret; + int i; + + /* try new binding to parse clocks from device tree first */ + ret = imx_lpcg_parse_clks_from_dt(pdev, np); + if (!ret) + return 0; + + ss_lpcg = of_device_get_match_data(dev); + if (!ss_lpcg) + return -ENODEV; + + /* + * Please don't replace this with devm_platform_ioremap_resource. + * + * devm_platform_ioremap_resource calls devm_ioremap_resource which + * differs from devm_ioremap by also calling devm_request_mem_region + * and preventing other mappings in the same area. + * + * On imx8 the LPCG nodes map entire subsystems and overlap + * peripherals, this means that using devm_platform_ioremap_resource + * will cause many devices to fail to probe including serial ports. + */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; + base = devm_ioremap(dev, res->start, resource_size(res)); + if (!base) + return -ENOMEM; + + clk_data = devm_kzalloc(&pdev->dev, struct_size(clk_data, hws, + ss_lpcg->num_max), GFP_KERNEL); + if (!clk_data) + return -ENOMEM; + + clk_data->num = ss_lpcg->num_max; + clks = clk_data->hws; + + for (i = 0; i < ss_lpcg->num_lpcg; i++) { + lpcg = ss_lpcg->lpcg + i; + clks[lpcg->id] = imx_clk_lpcg_scu(lpcg->name, lpcg->parent, + lpcg->flags, base + lpcg->offset, + lpcg->bit_idx, lpcg->hw_gate); + } + + for (i = 0; i < clk_data->num; i++) { + if (IS_ERR(clks[i])) + pr_warn("i.MX clk %u: register failed with %ld\n", + i, PTR_ERR(clks[i])); + } + + return of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} + +static const struct of_device_id imx8qxp_lpcg_match[] = { + { .compatible = "fsl,imx8qxp-lpcg-adma", &imx8qxp_ss_adma, }, + { .compatible = "fsl,imx8qxp-lpcg-conn", &imx8qxp_ss_conn, }, + { .compatible = "fsl,imx8qxp-lpcg-lsio", &imx8qxp_ss_lsio, }, + { .compatible = "fsl,imx8qxp-lpcg", NULL }, + { /* sentinel */ } +}; + +static struct platform_driver imx8qxp_lpcg_clk_driver = { + .driver = { + .name = "imx8qxp-lpcg-clk", + .of_match_table = imx8qxp_lpcg_match, + .pm = &imx_clk_lpcg_scu_pm_ops, + .suppress_bind_attrs = true, + }, + .probe = imx8qxp_lpcg_clk_probe, +}; + +module_platform_driver(imx8qxp_lpcg_clk_driver); + +MODULE_AUTHOR("Aisheng Dong <aisheng.dong@nxp.com>"); +MODULE_DESCRIPTION("NXP i.MX8QXP LPCG clock driver"); +MODULE_LICENSE("GPL v2"); |