// SPDX-License-Identifier: GPL-2.0
/*
* Copyright ( c ) 2017 Icenowy Zheng < icenowy @ aosc . xyz >
*/
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include "ccu_common.h"
#include "ccu_reset.h"
#include "ccu_div.h"
#include "ccu_gate.h"
#include "ccu_mp.h"
#include "ccu_nm.h"
#include "ccu-sun50i-h6-r.h"
/*
* Information about AR100 and AHB / APB clocks in R_CCU are gathered from
* clock definitions in the BSP source code .
*/
static const char * const ar100_r_apb2_parents[] = { "osc24M" , "osc32k" ,
"iosc" , "pll-periph0" };
static const struct ccu_mux_var_prediv ar100_r_apb2_predivs[] = {
{ .index = 3 , .shift = 0 , .width = 5 },
};
static struct ccu_div ar100_clk = {
.div = _SUNXI_CCU_DIV_FLAGS(8 , 2 , CLK_DIVIDER_POWER_OF_TWO),
.mux = {
.shift = 24 ,
.width = 2 ,
.var_predivs = ar100_r_apb2_predivs,
.n_var_predivs = ARRAY_SIZE(ar100_r_apb2_predivs),
},
.common = {
.reg = 0 x000,
.features = CCU_FEATURE_VARIABLE_PREDIV,
.hw.init = CLK_HW_INIT_PARENTS("ar100" ,
ar100_r_apb2_parents,
&ccu_div_ops,
0 ),
},
};
static CLK_FIXED_FACTOR_HW(r_ahb_clk, "r-ahb" , &ar100_clk.common.hw, 1 , 1 , 0 );
static SUNXI_CCU_M(r_apb1_clk, "r-apb1" , "r-ahb" , 0 x00c, 0 , 2 , 0 );
static struct ccu_div r_apb2_clk = {
.div = _SUNXI_CCU_DIV_FLAGS(8 , 2 , CLK_DIVIDER_POWER_OF_TWO),
.mux = {
.shift = 24 ,
.width = 2 ,
.var_predivs = ar100_r_apb2_predivs,
.n_var_predivs = ARRAY_SIZE(ar100_r_apb2_predivs),
},
.common = {
.reg = 0 x010,
.features = CCU_FEATURE_VARIABLE_PREDIV,
.hw.init = CLK_HW_INIT_PARENTS("r-apb2" ,
ar100_r_apb2_parents,
&ccu_div_ops,
0 ),
},
};
/*
* Information about the gate / resets are gathered from the clock header file
* in the BSP source code , although most of them are unused . The existence
* of the hardware block is verified with " 3 . 1 Memory Mapping " chapter in
* " Allwinner H6 V200 User Manual V1 . 1 " ; and the parent APB buses are verified
* with " 3 . 3 . 2 . 1 System Bus Tree " chapter in the same document .
*/
static SUNXI_CCU_GATE(r_apb1_timer_clk, "r-apb1-timer" , "r-apb1" ,
0 x11c, BIT(0 ), 0 );
static SUNXI_CCU_GATE(r_apb1_twd_clk, "r-apb1-twd" , "r-apb1" ,
0 x12c, BIT(0 ), 0 );
static SUNXI_CCU_GATE(r_apb1_pwm_clk, "r-apb1-pwm" , "r-apb1" ,
0 x13c, BIT(0 ), 0 );
static SUNXI_CCU_GATE(r_apb2_uart_clk, "r-apb2-uart" , "r-apb2" ,
0 x18c, BIT(0 ), 0 );
static SUNXI_CCU_GATE(r_apb2_i2c_clk, "r-apb2-i2c" , "r-apb2" ,
0 x19c, BIT(0 ), 0 );
static SUNXI_CCU_GATE(r_apb2_rsb_clk, "r-apb2-rsb" , "r-apb2" ,
0 x1bc, BIT(0 ), 0 );
static SUNXI_CCU_GATE(r_apb1_ir_clk, "r-apb1-ir" , "r-apb1" ,
0 x1cc, BIT(0 ), 0 );
static SUNXI_CCU_GATE(r_apb1_w1_clk, "r-apb1-w1" , "r-apb1" ,
0 x1ec, BIT(0 ), 0 );
static SUNXI_CCU_GATE(r_apb1_rtc_clk, "r-apb1-rtc" , "r-apb1" ,
0 x20c, BIT(0 ), CLK_IGNORE_UNUSED);
/* Information of IR(RX) mod clock is gathered from BSP source code */
static const char * const r_mod0_default_parents[] = { "osc32k" , "osc24M" };
static SUNXI_CCU_MP_WITH_MUX_GATE(ir_clk, "ir" ,
r_mod0_default_parents, 0 x1c0,
0 , 5 , /* M */
8 , 2 , /* P */
24 , 1 , /* mux */
BIT(31 ), /* gate */
0 );
/*
* BSP didn ' t use the 1 - wire function at all now , and the information about
* this mod clock is guessed from the IR mod clock above . The existence of
* this mod clock is proven by BSP clock header , and the dividers are verified
* by contents in the 1 - wire related chapter of the User Manual .
*/
static SUNXI_CCU_MP_WITH_MUX_GATE(w1_clk, "w1" ,
r_mod0_default_parents, 0 x1e0,
0 , 5 , /* M */
8 , 2 , /* P */
24 , 1 , /* mux */
BIT(31 ), /* gate */
0 );
static struct ccu_common *sun50i_h6_r_ccu_clks[] = {
&ar100_clk.common,
&r_apb1_clk.common,
&r_apb2_clk.common,
&r_apb1_timer_clk.common,
&r_apb1_twd_clk.common,
&r_apb1_pwm_clk.common,
&r_apb2_uart_clk.common,
&r_apb2_i2c_clk.common,
&r_apb2_rsb_clk.common,
&r_apb1_ir_clk.common,
&r_apb1_w1_clk.common,
&r_apb1_rtc_clk.common,
&ir_clk.common,
&w1_clk.common,
};
static struct clk_hw_onecell_data sun50i_h6_r_hw_clks = {
.hws = {
[CLK_AR100] = &ar100_clk.common.hw,
[CLK_R_AHB] = &r_ahb_clk.hw,
[CLK_R_APB1] = &r_apb1_clk.common.hw,
[CLK_R_APB2] = &r_apb2_clk.common.hw,
[CLK_R_APB1_TIMER] = &r_apb1_timer_clk.common.hw,
[CLK_R_APB1_TWD] = &r_apb1_twd_clk.common.hw,
[CLK_R_APB1_PWM] = &r_apb1_pwm_clk.common.hw,
[CLK_R_APB2_UART] = &r_apb2_uart_clk.common.hw,
[CLK_R_APB2_I2C] = &r_apb2_i2c_clk.common.hw,
[CLK_R_APB2_RSB] = &r_apb2_rsb_clk.common.hw,
[CLK_R_APB1_IR] = &r_apb1_ir_clk.common.hw,
[CLK_R_APB1_W1] = &r_apb1_w1_clk.common.hw,
[CLK_R_APB1_RTC] = &r_apb1_rtc_clk.common.hw,
[CLK_IR] = &ir_clk.common.hw,
[CLK_W1] = &w1_clk.common.hw,
},
.num = CLK_NUMBER,
};
static struct clk_hw_onecell_data sun50i_h616_r_hw_clks = {
.hws = {
[CLK_R_AHB] = &r_ahb_clk.hw,
[CLK_R_APB1] = &r_apb1_clk.common.hw,
[CLK_R_APB2] = &r_apb2_clk.common.hw,
[CLK_R_APB1_TWD] = &r_apb1_twd_clk.common.hw,
[CLK_R_APB2_I2C] = &r_apb2_i2c_clk.common.hw,
[CLK_R_APB2_RSB] = &r_apb2_rsb_clk.common.hw,
[CLK_R_APB1_IR] = &r_apb1_ir_clk.common.hw,
[CLK_R_APB1_RTC] = &r_apb1_rtc_clk.common.hw,
[CLK_IR] = &ir_clk.common.hw,
},
.num = CLK_NUMBER,
};
static const struct ccu_reset_map sun50i_h6_r_ccu_resets[] = {
[RST_R_APB1_TIMER] = { 0 x11c, BIT(16 ) },
[RST_R_APB1_TWD] = { 0 x12c, BIT(16 ) },
[RST_R_APB1_PWM] = { 0 x13c, BIT(16 ) },
[RST_R_APB2_UART] = { 0 x18c, BIT(16 ) },
[RST_R_APB2_I2C] = { 0 x19c, BIT(16 ) },
[RST_R_APB2_RSB] = { 0 x1bc, BIT(16 ) },
[RST_R_APB1_IR] = { 0 x1cc, BIT(16 ) },
[RST_R_APB1_W1] = { 0 x1ec, BIT(16 ) },
};
static const struct ccu_reset_map sun50i_h616_r_ccu_resets[] = {
[RST_R_APB1_TWD] = { 0 x12c, BIT(16 ) },
[RST_R_APB2_I2C] = { 0 x19c, BIT(16 ) },
[RST_R_APB2_RSB] = { 0 x1bc, BIT(16 ) },
[RST_R_APB1_IR] = { 0 x1cc, BIT(16 ) },
};
static const struct sunxi_ccu_desc sun50i_h6_r_ccu_desc = {
.ccu_clks = sun50i_h6_r_ccu_clks,
.num_ccu_clks = ARRAY_SIZE(sun50i_h6_r_ccu_clks),
.hw_clks = &sun50i_h6_r_hw_clks,
.resets = sun50i_h6_r_ccu_resets,
.num_resets = ARRAY_SIZE(sun50i_h6_r_ccu_resets),
};
static const struct sunxi_ccu_desc sun50i_h616_r_ccu_desc = {
.ccu_clks = sun50i_h6_r_ccu_clks,
.num_ccu_clks = ARRAY_SIZE(sun50i_h6_r_ccu_clks),
.hw_clks = &sun50i_h616_r_hw_clks,
.resets = sun50i_h616_r_ccu_resets,
.num_resets = ARRAY_SIZE(sun50i_h616_r_ccu_resets),
};
static int sun50i_h6_r_ccu_probe(struct platform_device *pdev)
{
const struct sunxi_ccu_desc *desc;
void __iomem *reg;
desc = of_device_get_match_data(&pdev->dev);
if (!desc)
return -EINVAL;
reg = devm_platform_ioremap_resource(pdev, 0 );
if (IS_ERR(reg))
return PTR_ERR(reg);
return devm_sunxi_ccu_probe(&pdev->dev, reg, desc);
}
static const struct of_device_id sun50i_h6_r_ccu_ids[] = {
{
.compatible = "allwinner,sun50i-h6-r-ccu" ,
.data = &sun50i_h6_r_ccu_desc,
},
{
.compatible = "allwinner,sun50i-h616-r-ccu" ,
.data = &sun50i_h616_r_ccu_desc,
},
{ }
};
MODULE_DEVICE_TABLE(of, sun50i_h6_r_ccu_ids);
static struct platform_driver sun50i_h6_r_ccu_driver = {
.probe = sun50i_h6_r_ccu_probe,
.driver = {
.name = "sun50i-h6-r-ccu" ,
.suppress_bind_attrs = true ,
.of_match_table = sun50i_h6_r_ccu_ids,
},
};
module_platform_driver(sun50i_h6_r_ccu_driver);
MODULE_IMPORT_NS("SUNXI_CCU" );
MODULE_DESCRIPTION("Support for the Allwinner H6 and H616 PRCM CCU" );
MODULE_LICENSE("GPL" );
Messung V0.5 in Prozent C=94 H=97 G=95
¤ Dauer der Verarbeitung: 0.4 Sekunden
¤
*© Formatika GbR, Deutschland