1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * linux/arch/arm/mach-mmp/gplugd.c
4 *
5 * Support for the Marvell PXA168-based GuruPlug Display (gplugD) Platform.
6 */
7
8 #include <linux/init.h>
9 #include <linux/platform_device.h>
10 #include <linux/gpio.h>
11 #include <linux/gpio-pxa.h>
12
13 #include <asm/mach/arch.h>
14 #include <asm/mach-types.h>
15
16 #include "irqs.h"
17 #include "pxa168.h"
18 #include "mfp-pxa168.h"
19
20 #include "common.h"
21
22 static unsigned long gplugd_pin_config[] __initdata = {
23 /* UART3 */
24 GPIO8_UART3_TXD,
25 GPIO9_UART3_RXD,
26 GPIO1O_UART3_CTS,
27 GPIO11_UART3_RTS,
28
29 /* USB OTG PEN */
30 GPIO18_GPIO,
31
32 /* MMC2 */
33 GPIO28_MMC2_CMD,
34 GPIO29_MMC2_CLK,
35 GPIO30_MMC2_DAT0,
36 GPIO31_MMC2_DAT1,
37 GPIO32_MMC2_DAT2,
38 GPIO33_MMC2_DAT3,
39
40 /* LCD & HDMI clock selection GPIO: 0: 74.176MHz, 1: 74.25 MHz */
41 GPIO35_GPIO,
42 GPIO36_GPIO, /* CEC Interrupt */
43
44 /* MMC1 */
45 GPIO43_MMC1_CLK,
46 GPIO49_MMC1_CMD,
47 GPIO41_MMC1_DAT0,
48 GPIO40_MMC1_DAT1,
49 GPIO52_MMC1_DAT2,
50 GPIO51_MMC1_DAT3,
51 GPIO53_MMC1_CD,
52
53 /* LCD */
54 GPIO56_LCD_FCLK_RD,
55 GPIO57_LCD_LCLK_A0,
56 GPIO58_LCD_PCLK_WR,
57 GPIO59_LCD_DENA_BIAS,
58 GPIO60_LCD_DD0,
59 GPIO61_LCD_DD1,
60 GPIO62_LCD_DD2,
61 GPIO63_LCD_DD3,
62 GPIO64_LCD_DD4,
63 GPIO65_LCD_DD5,
64 GPIO66_LCD_DD6,
65 GPIO67_LCD_DD7,
66 GPIO68_LCD_DD8,
67 GPIO69_LCD_DD9,
68 GPIO70_LCD_DD10,
69 GPIO71_LCD_DD11,
70 GPIO72_LCD_DD12,
71 GPIO73_LCD_DD13,
72 GPIO74_LCD_DD14,
73 GPIO75_LCD_DD15,
74 GPIO76_LCD_DD16,
75 GPIO77_LCD_DD17,
76 GPIO78_LCD_DD18,
77 GPIO79_LCD_DD19,
78 GPIO80_LCD_DD20,
79 GPIO81_LCD_DD21,
80 GPIO82_LCD_DD22,
81 GPIO83_LCD_DD23,
82
83 /* GPIO */
84 GPIO84_GPIO,
85 GPIO85_GPIO,
86
87 /* Fast-Ethernet*/
88 GPIO86_TX_CLK,
89 GPIO87_TX_EN,
90 GPIO88_TX_DQ3,
91 GPIO89_TX_DQ2,
92 GPIO90_TX_DQ1,
93 GPIO91_TX_DQ0,
94 GPIO92_MII_CRS,
95 GPIO93_MII_COL,
96 GPIO94_RX_CLK,
97 GPIO95_RX_ER,
98 GPIO96_RX_DQ3,
99 GPIO97_RX_DQ2,
100 GPIO98_RX_DQ1,
101 GPIO99_RX_DQ0,
102 GPIO100_MII_MDC,
103 GPIO101_MII_MDIO,
104 GPIO103_RX_DV,
105 GPIO104_GPIO, /* Reset PHY */
106
107 /* RTC interrupt */
108 GPIO102_GPIO,
109
110 /* I2C */
111 GPIO105_CI2C_SDA,
112 GPIO106_CI2C_SCL,
113
114 /* SPI NOR Flash on SSP2 */
115 GPIO107_SSP2_RXD,
116 GPIO108_SSP2_TXD,
117 GPIO110_GPIO, /* SPI_CSn */
118 GPIO111_SSP2_CLK,
119
120 /* Select JTAG */
121 GPIO109_GPIO,
122
123 /* I2S */
124 GPIO114_I2S_FRM,
125 GPIO115_I2S_BCLK,
126 GPIO116_I2S_TXD
127 };
128
129 static struct pxa_gpio_platform_data pxa168_gpio_pdata = {
130 .irq_base = MMP_GPIO_TO_IRQ(0),
131 };
132
133 static struct i2c_board_info gplugd_i2c_board_info[] = {
134 {
135 .type = "isl1208",
136 .addr = 0x6F,
137 }
138 };
139
140 /* Bring PHY out of reset by setting GPIO 104 */
gplugd_eth_init(void)141 static int gplugd_eth_init(void)
142 {
143 if (unlikely(gpio_request(104, "ETH_RESET_N"))) {
144 printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet "
145 "PHY out of reset\n");
146 return -EIO;
147 }
148
149 gpio_direction_output(104, 1);
150 gpio_free(104);
151 return 0;
152 }
153
154 struct pxa168_eth_platform_data gplugd_eth_platform_data = {
155 .port_number = 0,
156 .phy_addr = 0,
157 .speed = 0, /* Autonagotiation */
158 .intf = PHY_INTERFACE_MODE_RMII,
159 .init = gplugd_eth_init,
160 };
161
select_disp_freq(void)162 static void __init select_disp_freq(void)
163 {
164 /* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
165 if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) {
166 printk(KERN_ERR "Can't get hold of GPIO 35 to select display "
167 "frequency\n");
168 } else {
169 gpio_direction_output(35, 1);
170 gpio_free(35);
171 }
172
173 if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) {
174 printk(KERN_ERR "Can't get hold of GPIO 85 to select display "
175 "frequency\n");
176 } else {
177 gpio_direction_output(85, 0);
178 gpio_free(85);
179 }
180 }
181
gplugd_init(void)182 static void __init gplugd_init(void)
183 {
184 mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
185
186 select_disp_freq();
187
188 /* on-chip devices */
189 pxa168_add_uart(3);
190 pxa168_add_ssp(1);
191 pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info));
192 platform_device_add_data(&pxa168_device_gpio, &pxa168_gpio_pdata,
193 sizeof(struct pxa_gpio_platform_data));
194 platform_device_register(&pxa168_device_gpio);
195
196 pxa168_add_eth(&gplugd_eth_platform_data);
197 }
198
199 MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
200 .map_io = mmp_map_io,
201 .nr_irqs = MMP_NR_IRQS,
202 .init_irq = pxa168_init_irq,
203 .init_time = pxa168_timer_init,
204 .init_machine = gplugd_init,
205 .restart = pxa168_restart,
206 MACHINE_END
207