1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * PSC clock descriptions for TI DA850/OMAP-L138/AM18XX
4 *
5 * Copyright (C) 2018 David Lechner <david@lechnology.com>
6 */
7
8 #include <linux/clk-provider.h>
9 #include <linux/reset-controller.h>
10 #include <linux/clk.h>
11 #include <linux/clkdev.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/of.h>
15 #include <linux/types.h>
16
17 #include "psc.h"
18
19 LPSC_CLKDEV1(emifa_clkdev, NULL, "ti-aemif");
20 LPSC_CLKDEV1(spi0_clkdev, NULL, "spi_davinci.0");
21 LPSC_CLKDEV1(mmcsd0_clkdev, NULL, "da830-mmc.0");
22 LPSC_CLKDEV1(uart0_clkdev, NULL, "serial8250.0");
23 /* REVISIT: used dev_id instead of con_id */
24 LPSC_CLKDEV1(arm_clkdev, "arm", NULL);
25 LPSC_CLKDEV1(dsp_clkdev, NULL, "davinci-rproc.0");
26
27 static const struct davinci_lpsc_clk_info da850_psc0_info[] = {
28 LPSC(0, 0, tpcc0, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
29 LPSC(1, 0, tptc0, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
30 LPSC(2, 0, tptc1, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
31 LPSC(3, 0, emifa, async1, emifa_clkdev, 0),
32 LPSC(4, 0, spi0, pll0_sysclk2, spi0_clkdev, 0),
33 LPSC(5, 0, mmcsd0, pll0_sysclk2, mmcsd0_clkdev, 0),
34 LPSC(6, 0, aintc, pll0_sysclk4, NULL, LPSC_ALWAYS_ENABLED),
35 LPSC(7, 0, arm_rom, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
36 LPSC(9, 0, uart0, pll0_sysclk2, uart0_clkdev, 0),
37 LPSC(13, 0, pruss, pll0_sysclk2, NULL, 0),
38 LPSC(14, 0, arm, pll0_sysclk6, arm_clkdev, LPSC_ALWAYS_ENABLED | LPSC_SET_RATE_PARENT),
39 LPSC(15, 1, dsp, pll0_sysclk1, dsp_clkdev, LPSC_FORCE | LPSC_LOCAL_RESET),
40 { }
41 };
42
43 LPSC_CLKDEV3(usb0_clkdev, "fck", "da830-usb-phy-clks",
44 NULL, "musb-da8xx",
45 NULL, "cppi41-dmaengine");
46 LPSC_CLKDEV1(usb1_clkdev, NULL, "ohci-da8xx");
47 /* REVISIT: gpio-davinci.c should be modified to drop con_id */
48 LPSC_CLKDEV1(gpio_clkdev, "gpio", NULL);
49 LPSC_CLKDEV2(emac_clkdev, NULL, "davinci_emac.1",
50 "fck", "davinci_mdio.0");
51 LPSC_CLKDEV1(mcasp0_clkdev, NULL, "davinci-mcasp.0");
52 LPSC_CLKDEV1(sata_clkdev, "fck", "ahci_da850");
53 LPSC_CLKDEV1(vpif_clkdev, NULL, "vpif");
54 LPSC_CLKDEV1(spi1_clkdev, NULL, "spi_davinci.1");
55 LPSC_CLKDEV1(i2c1_clkdev, NULL, "i2c_davinci.2");
56 LPSC_CLKDEV1(uart1_clkdev, NULL, "serial8250.1");
57 LPSC_CLKDEV1(uart2_clkdev, NULL, "serial8250.2");
58 LPSC_CLKDEV1(mcbsp0_clkdev, NULL, "davinci-mcbsp.0");
59 LPSC_CLKDEV1(mcbsp1_clkdev, NULL, "davinci-mcbsp.1");
60 LPSC_CLKDEV1(lcdc_clkdev, "fck", "da8xx_lcdc.0");
61 LPSC_CLKDEV3(ehrpwm_clkdev, "fck", "ehrpwm.0",
62 "fck", "ehrpwm.1",
63 NULL, "da830-tbclksync");
64 LPSC_CLKDEV1(mmcsd1_clkdev, NULL, "da830-mmc.1");
65 LPSC_CLKDEV3(ecap_clkdev, "fck", "ecap.0",
66 "fck", "ecap.1",
67 "fck", "ecap.2");
68
69 static struct reset_control_lookup da850_psc0_reset_lookup_table[] = {
70 RESET_LOOKUP("da850-psc0", 15, "davinci-rproc.0", NULL),
71 };
72
da850_psc0_init(struct device * dev,void __iomem * base)73 static int da850_psc0_init(struct device *dev, void __iomem *base)
74 {
75 reset_controller_add_lookup(da850_psc0_reset_lookup_table,
76 ARRAY_SIZE(da850_psc0_reset_lookup_table));
77 return davinci_psc_register_clocks(dev, da850_psc0_info, 16, base);
78 }
79
of_da850_psc0_init(struct device * dev,void __iomem * base)80 static int of_da850_psc0_init(struct device *dev, void __iomem *base)
81 {
82 return of_davinci_psc_clk_init(dev, da850_psc0_info, 16, base);
83 }
84
85 static struct clk_bulk_data da850_psc0_parent_clks[] = {
86 { .id = "pll0_sysclk1" },
87 { .id = "pll0_sysclk2" },
88 { .id = "pll0_sysclk4" },
89 { .id = "pll0_sysclk6" },
90 { .id = "async1" },
91 };
92
93 const struct davinci_psc_init_data da850_psc0_init_data = {
94 .parent_clks = da850_psc0_parent_clks,
95 .num_parent_clks = ARRAY_SIZE(da850_psc0_parent_clks),
96 .psc_init = &da850_psc0_init,
97 };
98
99 const struct davinci_psc_init_data of_da850_psc0_init_data = {
100 .parent_clks = da850_psc0_parent_clks,
101 .num_parent_clks = ARRAY_SIZE(da850_psc0_parent_clks),
102 .psc_init = &of_da850_psc0_init,
103 };
104
105 static const struct davinci_lpsc_clk_info da850_psc1_info[] = {
106 LPSC(0, 0, tpcc1, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
107 LPSC(1, 0, usb0, pll0_sysclk2, usb0_clkdev, 0),
108 LPSC(2, 0, usb1, pll0_sysclk4, usb1_clkdev, 0),
109 LPSC(3, 0, gpio, pll0_sysclk4, gpio_clkdev, 0),
110 LPSC(5, 0, emac, pll0_sysclk4, emac_clkdev, 0),
111 LPSC(6, 0, ddr, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
112 LPSC(7, 0, mcasp0, async3, mcasp0_clkdev, 0),
113 LPSC(8, 0, sata, pll0_sysclk2, sata_clkdev, LPSC_FORCE),
114 LPSC(9, 0, vpif, pll0_sysclk2, vpif_clkdev, 0),
115 LPSC(10, 0, spi1, async3, spi1_clkdev, 0),
116 LPSC(11, 0, i2c1, pll0_sysclk4, i2c1_clkdev, 0),
117 LPSC(12, 0, uart1, async3, uart1_clkdev, 0),
118 LPSC(13, 0, uart2, async3, uart2_clkdev, 0),
119 LPSC(14, 0, mcbsp0, async3, mcbsp0_clkdev, 0),
120 LPSC(15, 0, mcbsp1, async3, mcbsp1_clkdev, 0),
121 LPSC(16, 0, lcdc, pll0_sysclk2, lcdc_clkdev, 0),
122 LPSC(17, 0, ehrpwm, async3, ehrpwm_clkdev, 0),
123 LPSC(18, 0, mmcsd1, pll0_sysclk2, mmcsd1_clkdev, 0),
124 LPSC(20, 0, ecap, async3, ecap_clkdev, 0),
125 LPSC(21, 0, tptc2, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
126 { }
127 };
128
da850_psc1_init(struct device * dev,void __iomem * base)129 static int da850_psc1_init(struct device *dev, void __iomem *base)
130 {
131 return davinci_psc_register_clocks(dev, da850_psc1_info, 32, base);
132 }
133
of_da850_psc1_init(struct device * dev,void __iomem * base)134 static int of_da850_psc1_init(struct device *dev, void __iomem *base)
135 {
136 return of_davinci_psc_clk_init(dev, da850_psc1_info, 32, base);
137 }
138
139 static struct clk_bulk_data da850_psc1_parent_clks[] = {
140 { .id = "pll0_sysclk2" },
141 { .id = "pll0_sysclk4" },
142 { .id = "async3" },
143 };
144
145 const struct davinci_psc_init_data da850_psc1_init_data = {
146 .parent_clks = da850_psc1_parent_clks,
147 .num_parent_clks = ARRAY_SIZE(da850_psc1_parent_clks),
148 .psc_init = &da850_psc1_init,
149 };
150
151 const struct davinci_psc_init_data of_da850_psc1_init_data = {
152 .parent_clks = da850_psc1_parent_clks,
153 .num_parent_clks = ARRAY_SIZE(da850_psc1_parent_clks),
154 .psc_init = &of_da850_psc1_init,
155 };
156