1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * PSC clock descriptions for TI DA830/OMAP-L137/AM17XX
4  *
5  * Copyright (C) 2018 David Lechner <david@lechnology.com>
6  */
7 
8 #include <linux/clk-provider.h>
9 #include <linux/clk.h>
10 #include <linux/clkdev.h>
11 #include <linux/init.h>
12 #include <linux/kernel.h>
13 #include <linux/types.h>
14 
15 #include "psc.h"
16 
17 LPSC_CLKDEV1(aemif_clkdev,	NULL,	"ti-aemif");
18 LPSC_CLKDEV1(spi0_clkdev,	NULL,	"spi_davinci.0");
19 LPSC_CLKDEV1(mmcsd_clkdev,	NULL,	"da830-mmc.0");
20 LPSC_CLKDEV1(uart0_clkdev,	NULL,	"serial8250.0");
21 
22 static const struct davinci_lpsc_clk_info da830_psc0_info[] = {
23 	LPSC(0,  0, tpcc,     pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
24 	LPSC(1,  0, tptc0,    pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
25 	LPSC(2,  0, tptc1,    pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
26 	LPSC(3,  0, aemif,    pll0_sysclk3, aemif_clkdev, LPSC_ALWAYS_ENABLED),
27 	LPSC(4,  0, spi0,     pll0_sysclk2, spi0_clkdev,  0),
28 	LPSC(5,  0, mmcsd,    pll0_sysclk2, mmcsd_clkdev, 0),
29 	LPSC(6,  0, aintc,    pll0_sysclk4, NULL,         LPSC_ALWAYS_ENABLED),
30 	LPSC(7,  0, arm_rom,  pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
31 	LPSC(8,  0, secu_mgr, pll0_sysclk4, NULL,         LPSC_ALWAYS_ENABLED),
32 	LPSC(9,  0, uart0,    pll0_sysclk2, uart0_clkdev, 0),
33 	LPSC(10, 0, scr0_ss,  pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
34 	LPSC(11, 0, scr1_ss,  pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
35 	LPSC(12, 0, scr2_ss,  pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
36 	LPSC(13, 0, pruss,    pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
37 	LPSC(14, 0, arm,      pll0_sysclk6, NULL,         LPSC_ALWAYS_ENABLED),
38 	{ }
39 };
40 
da830_psc0_init(struct device * dev,void __iomem * base)41 static int da830_psc0_init(struct device *dev, void __iomem *base)
42 {
43 	return davinci_psc_register_clocks(dev, da830_psc0_info, 16, base);
44 }
45 
46 static struct clk_bulk_data da830_psc0_parent_clks[] = {
47 	{ .id = "pll0_sysclk2" },
48 	{ .id = "pll0_sysclk3" },
49 	{ .id = "pll0_sysclk4" },
50 	{ .id = "pll0_sysclk6" },
51 };
52 
53 const struct davinci_psc_init_data da830_psc0_init_data = {
54 	.parent_clks		= da830_psc0_parent_clks,
55 	.num_parent_clks	= ARRAY_SIZE(da830_psc0_parent_clks),
56 	.psc_init		= &da830_psc0_init,
57 };
58 
59 LPSC_CLKDEV3(usb0_clkdev,	"fck",	"da830-usb-phy-clks",
60 				NULL,	"musb-da8xx",
61 				NULL,	"cppi41-dmaengine");
62 LPSC_CLKDEV1(usb1_clkdev,	NULL,	"ohci-da8xx");
63 /* REVISIT: gpio-davinci.c should be modified to drop con_id */
64 LPSC_CLKDEV1(gpio_clkdev,	"gpio",	NULL);
65 LPSC_CLKDEV2(emac_clkdev,	NULL,	"davinci_emac.1",
66 				"fck",	"davinci_mdio.0");
67 LPSC_CLKDEV1(mcasp0_clkdev,	NULL,	"davinci-mcasp.0");
68 LPSC_CLKDEV1(mcasp1_clkdev,	NULL,	"davinci-mcasp.1");
69 LPSC_CLKDEV1(mcasp2_clkdev,	NULL,	"davinci-mcasp.2");
70 LPSC_CLKDEV1(spi1_clkdev,	NULL,	"spi_davinci.1");
71 LPSC_CLKDEV1(i2c1_clkdev,	NULL,	"i2c_davinci.2");
72 LPSC_CLKDEV1(uart1_clkdev,	NULL,	"serial8250.1");
73 LPSC_CLKDEV1(uart2_clkdev,	NULL,	"serial8250.2");
74 LPSC_CLKDEV1(lcdc_clkdev,	"fck",	"da8xx_lcdc.0");
75 LPSC_CLKDEV2(pwm_clkdev,	"fck",	"ehrpwm.0",
76 				"fck",	"ehrpwm.1");
77 LPSC_CLKDEV3(ecap_clkdev,	"fck",	"ecap.0",
78 				"fck",	"ecap.1",
79 				"fck",	"ecap.2");
80 LPSC_CLKDEV2(eqep_clkdev,	NULL,	"eqep.0",
81 				NULL,	"eqep.1");
82 
83 static const struct davinci_lpsc_clk_info da830_psc1_info[] = {
84 	LPSC(1,  0, usb0,   pll0_sysclk2, usb0_clkdev,   0),
85 	LPSC(2,  0, usb1,   pll0_sysclk4, usb1_clkdev,   0),
86 	LPSC(3,  0, gpio,   pll0_sysclk4, gpio_clkdev,   0),
87 	LPSC(5,  0, emac,   pll0_sysclk4, emac_clkdev,   0),
88 	LPSC(6,  0, emif3,  pll0_sysclk5, NULL,          LPSC_ALWAYS_ENABLED),
89 	LPSC(7,  0, mcasp0, pll0_sysclk2, mcasp0_clkdev, 0),
90 	LPSC(8,  0, mcasp1, pll0_sysclk2, mcasp1_clkdev, 0),
91 	LPSC(9,  0, mcasp2, pll0_sysclk2, mcasp2_clkdev, 0),
92 	LPSC(10, 0, spi1,   pll0_sysclk2, spi1_clkdev,   0),
93 	LPSC(11, 0, i2c1,   pll0_sysclk4, i2c1_clkdev,   0),
94 	LPSC(12, 0, uart1,  pll0_sysclk2, uart1_clkdev,  0),
95 	LPSC(13, 0, uart2,  pll0_sysclk2, uart2_clkdev,  0),
96 	LPSC(16, 0, lcdc,   pll0_sysclk2, lcdc_clkdev,   0),
97 	LPSC(17, 0, pwm,    pll0_sysclk2, pwm_clkdev,    0),
98 	LPSC(20, 0, ecap,   pll0_sysclk2, ecap_clkdev,   0),
99 	LPSC(21, 0, eqep,   pll0_sysclk2, eqep_clkdev,   0),
100 	{ }
101 };
102 
da830_psc1_init(struct device * dev,void __iomem * base)103 static int da830_psc1_init(struct device *dev, void __iomem *base)
104 {
105 	return davinci_psc_register_clocks(dev, da830_psc1_info, 32, base);
106 }
107 
108 static struct clk_bulk_data da830_psc1_parent_clks[] = {
109 	{ .id = "pll0_sysclk2" },
110 	{ .id = "pll0_sysclk4" },
111 	{ .id = "pll0_sysclk5" },
112 };
113 
114 const struct davinci_psc_init_data da830_psc1_init_data = {
115 	.parent_clks		= da830_psc1_parent_clks,
116 	.num_parent_clks	= ARRAY_SIZE(da830_psc1_parent_clks),
117 	.psc_init		= &da830_psc1_init,
118 };
119