clk/imx/clk-imx8qxp-lpcg.c

1 // SPDX-License-Identifier: GPL-2.0+
7 #include <linux/clk-provider.h>
16 #include "clk-scu.h"
17 #include "clk-imx8qxp-lpcg.h"
19 #include <dt-bindings/clock/imx8-clock.h>
22  * struct imx8qxp_lpcg_data - Description of one LPCG clock
27  * @offset: offset of this LPCG clock
28  * @bit_idx: bit index of this LPCG clock
31  * This structure describes one LPCG clock
44  * struct imx8qxp_ss_lpcg - Description of one subsystem LPCG clocks
45  * @lpcg: LPCG clocks array of one subsystem
46  * @num_lpcg: the number of LPCG clocks
47  * @num_max: the maximum number of LPCG clocks
49  * This structure describes each subsystem LPCG clocks information
53 	const struct imx8qxp_lpcg_data *lpcg;  member
83 	.lpcg = imx8qxp_lpcg_adma,
111 	.lpcg = imx8qxp_lpcg_conn,
155 	.lpcg = imx8qxp_lpcg_lsio,
162 	struct device *dev = &pdev->dev;  in imx8qxp_lpcg_clk_probe()
163 	struct device_node *np = dev->of_node;  in imx8qxp_lpcg_clk_probe()
166 	const struct imx8qxp_lpcg_data *lpcg;  in imx8qxp_lpcg_clk_probe()  local
174 		return -ENODEV;  in imx8qxp_lpcg_clk_probe()
183 	 * On imx8 the LPCG nodes map entire subsystems and overlap  in imx8qxp_lpcg_clk_probe()
189 		return -EINVAL;  in imx8qxp_lpcg_clk_probe()
190 	base = devm_ioremap(dev, res->start, resource_size(res));  in imx8qxp_lpcg_clk_probe()
192 		return -ENOMEM;  in imx8qxp_lpcg_clk_probe()
194 	clk_data = devm_kzalloc(&pdev->dev, struct_size(clk_data, hws,  in imx8qxp_lpcg_clk_probe()
195 				ss_lpcg->num_max), GFP_KERNEL);  in imx8qxp_lpcg_clk_probe()
197 		return -ENOMEM;  in imx8qxp_lpcg_clk_probe()
199 	clk_data->num = ss_lpcg->num_max;  in imx8qxp_lpcg_clk_probe()
200 	clks = clk_data->hws;  in imx8qxp_lpcg_clk_probe()
202 	for (i = 0; i < ss_lpcg->num_lpcg; i++) {  in imx8qxp_lpcg_clk_probe()
203 		lpcg = ss_lpcg->lpcg + i;  in imx8qxp_lpcg_clk_probe()
204 		clks[lpcg->id] = imx_clk_lpcg_scu(lpcg->name, lpcg->parent,  in imx8qxp_lpcg_clk_probe()
205 						  lpcg->flags, base + lpcg->offset,  in imx8qxp_lpcg_clk_probe()
206 						  lpcg->bit_idx, lpcg->hw_gate);  in imx8qxp_lpcg_clk_probe()
209 	for (i = 0; i < clk_data->num; i++) {  in imx8qxp_lpcg_clk_probe()
219 	{ .compatible = "fsl,imx8qxp-lpcg-adma", &imx8qxp_ss_adma, },
220 	{ .compatible = "fsl,imx8qxp-lpcg-conn", &imx8qxp_ss_conn, },
221 	{ .compatible = "fsl,imx8qxp-lpcg-lsio", &imx8qxp_ss_lsio, },
227 		.name = "imx8qxp-lpcg-clk",
237 MODULE_DESCRIPTION("NXP i.MX8QXP LPCG clock driver");