1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * PSC clock descriptions for TI DaVinci DM365
4 *
5 * Copyright (C) 2018 David Lechner <david@lechnology.com>
6 */
7
8 #include <linux/clk-provider.h>
9 #include <linux/clk/davinci.h>
10 #include <linux/clk.h>
11 #include <linux/clkdev.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15
16 #include "psc.h"
17
18 LPSC_CLKDEV1(vpss_slave_clkdev, "slave", "vpss");
19 LPSC_CLKDEV1(spi1_clkdev, NULL, "spi_davinci.1");
20 LPSC_CLKDEV1(mmcsd1_clkdev, NULL, "da830-mmc.1");
21 LPSC_CLKDEV1(asp0_clkdev, NULL, "davinci-mcbsp");
22 LPSC_CLKDEV1(usb_clkdev, "usb", NULL);
23 LPSC_CLKDEV1(spi2_clkdev, NULL, "spi_davinci.2");
24 LPSC_CLKDEV2(aemif_clkdev, "aemif", NULL,
25 NULL, "ti-aemif");
26 LPSC_CLKDEV1(mmcsd0_clkdev, NULL, "da830-mmc.0");
27 LPSC_CLKDEV1(i2c_clkdev, NULL, "i2c_davinci.1");
28 LPSC_CLKDEV1(uart0_clkdev, NULL, "serial8250.0");
29 LPSC_CLKDEV1(uart1_clkdev, NULL, "serial8250.1");
30 LPSC_CLKDEV1(spi0_clkdev, NULL, "spi_davinci.0");
31 /* REVISIT: gpio-davinci.c should be modified to drop con_id */
32 LPSC_CLKDEV1(gpio_clkdev, "gpio", NULL);
33 LPSC_CLKDEV1(timer0_clkdev, "timer0", NULL);
34 LPSC_CLKDEV1(timer2_clkdev, NULL, "davinci-wdt");
35 LPSC_CLKDEV1(spi3_clkdev, NULL, "spi_davinci.3");
36 LPSC_CLKDEV1(spi4_clkdev, NULL, "spi_davinci.4");
37 LPSC_CLKDEV2(emac_clkdev, NULL, "davinci_emac.1",
38 "fck", "davinci_mdio.0");
39 LPSC_CLKDEV1(voice_codec_clkdev, NULL, "davinci_voicecodec");
40 LPSC_CLKDEV1(vpss_dac_clkdev, "vpss_dac", NULL);
41 LPSC_CLKDEV1(vpss_master_clkdev, "master", "vpss");
42
43 static const struct davinci_lpsc_clk_info dm365_psc_info[] = {
44 LPSC(1, 0, vpss_slave, pll1_sysclk5, vpss_slave_clkdev, 0),
45 LPSC(5, 0, timer3, pll1_auxclk, NULL, 0),
46 LPSC(6, 0, spi1, pll1_sysclk4, spi1_clkdev, 0),
47 LPSC(7, 0, mmcsd1, pll1_sysclk4, mmcsd1_clkdev, 0),
48 LPSC(8, 0, asp0, pll1_sysclk4, asp0_clkdev, 0),
49 LPSC(9, 0, usb, pll1_auxclk, usb_clkdev, 0),
50 LPSC(10, 0, pwm3, pll1_auxclk, NULL, 0),
51 LPSC(11, 0, spi2, pll1_sysclk4, spi2_clkdev, 0),
52 LPSC(12, 0, rto, pll1_sysclk4, NULL, 0),
53 LPSC(14, 0, aemif, pll1_sysclk4, aemif_clkdev, 0),
54 LPSC(15, 0, mmcsd0, pll1_sysclk8, mmcsd0_clkdev, 0),
55 LPSC(18, 0, i2c, pll1_auxclk, i2c_clkdev, 0),
56 LPSC(19, 0, uart0, pll1_auxclk, uart0_clkdev, 0),
57 LPSC(20, 0, uart1, pll1_sysclk4, uart1_clkdev, 0),
58 LPSC(22, 0, spi0, pll1_sysclk4, spi0_clkdev, 0),
59 LPSC(23, 0, pwm0, pll1_auxclk, NULL, 0),
60 LPSC(24, 0, pwm1, pll1_auxclk, NULL, 0),
61 LPSC(25, 0, pwm2, pll1_auxclk, NULL, 0),
62 LPSC(26, 0, gpio, pll1_sysclk4, gpio_clkdev, 0),
63 LPSC(27, 0, timer0, pll1_auxclk, timer0_clkdev, LPSC_ALWAYS_ENABLED),
64 LPSC(28, 0, timer1, pll1_auxclk, NULL, 0),
65 /* REVISIT: why can't this be disabled? */
66 LPSC(29, 0, timer2, pll1_auxclk, timer2_clkdev, LPSC_ALWAYS_ENABLED),
67 LPSC(31, 0, arm, pll2_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
68 LPSC(38, 0, spi3, pll1_sysclk4, spi3_clkdev, 0),
69 LPSC(39, 0, spi4, pll1_auxclk, spi4_clkdev, 0),
70 LPSC(40, 0, emac, pll1_sysclk4, emac_clkdev, 0),
71 /*
72 * The TRM (ARM Subsystem User's Guide) shows two clocks input into
73 * voice codec module (PLL2 SYSCLK4 with a DIV2 and PLL1 SYSCLK4). Its
74 * not fully clear from documentation which clock should be considered
75 * as parent for PSC. The clock chosen here is to maintain
76 * compatibility with existing code in arch/arm/mach-davinci/dm365.c
77 */
78 LPSC(44, 0, voice_codec, pll2_sysclk4, voice_codec_clkdev, 0),
79 /*
80 * Its not fully clear from TRM (ARM Subsystem User's Guide) as to what
81 * the parent of VPSS DAC LPSC should actually be. PLL1 SYSCLK3 feeds
82 * into HDVICP and MJCP. The clock chosen here is to remain compatible
83 * with code existing in arch/arm/mach-davinci/dm365.c
84 */
85 LPSC(46, 0, vpss_dac, pll1_sysclk3, vpss_dac_clkdev, 0),
86 LPSC(47, 0, vpss_master, pll1_sysclk5, vpss_master_clkdev, 0),
87 LPSC(50, 0, mjcp, pll1_sysclk3, NULL, 0),
88 { }
89 };
90
dm365_psc_init(struct device * dev,void __iomem * base)91 int dm365_psc_init(struct device *dev, void __iomem *base)
92 {
93 return davinci_psc_register_clocks(dev, dm365_psc_info, 52, base);
94 }
95
96 static struct clk_bulk_data dm365_psc_parent_clks[] = {
97 { .id = "pll1_sysclk1" },
98 { .id = "pll1_sysclk3" },
99 { .id = "pll1_sysclk4" },
100 { .id = "pll1_sysclk5" },
101 { .id = "pll1_sysclk8" },
102 { .id = "pll2_sysclk2" },
103 { .id = "pll2_sysclk4" },
104 { .id = "pll1_auxclk" },
105 };
106
107 const struct davinci_psc_init_data dm365_psc_init_data = {
108 .parent_clks = dm365_psc_parent_clks,
109 .num_parent_clks = ARRAY_SIZE(dm365_psc_parent_clks),
110 .psc_init = &dm365_psc_init,
111 };
112