Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * TI Fixed Factor Clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 2013 Texas Instruments, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Tero Kristo <t-kristo@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * This program is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * it under the terms of the GNU General Public License version 2 as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * published by the Free Software Foundation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  * kind, whether express or implied; without even the implied warranty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/clk-provider.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/of_address.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/clk/ti.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "clock.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #undef pr_fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define pr_fmt(fmt) "%s: " fmt, __func__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)  * of_ti_fixed_factor_clk_setup - Setup function for TI fixed factor clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)  * @node: device node for this clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)  * Sets up a simple fixed factor clock based on device tree info.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static void __init of_ti_fixed_factor_clk_setup(struct device_node *node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	struct clk *clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	const char *clk_name = node->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	const char *parent_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	u32 div, mult;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	u32 flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	if (of_property_read_u32(node, "ti,clock-div", &div)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		pr_err("%pOFn must have a clock-div property\n", node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	if (of_property_read_u32(node, "ti,clock-mult", &mult)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		pr_err("%pOFn must have a clock-mult property\n", node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	if (of_property_read_bool(node, "ti,set-rate-parent"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 		flags |= CLK_SET_RATE_PARENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	parent_name = of_clk_get_parent_name(node, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	clk = clk_register_fixed_factor(NULL, clk_name, parent_name, flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 					mult, div);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	if (!IS_ERR(clk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		of_clk_add_provider(node, of_clk_src_simple_get, clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 		of_ti_clk_autoidle_setup(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 		ti_clk_add_alias(NULL, clk, clk_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) CLK_OF_DECLARE(ti_fixed_factor_clk, "ti,fixed-factor-clock",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	       of_ti_fixed_factor_clk_setup);