8 #define TWL_INTBR_PMBR1 0x92
9 #define GPIODATADIR1 0x9b
10 #define SETGPIODATAOUT1 0xa4
13 * Hacky DSS/LCD initialization code
16 static void dss_lcd_init(uint base_addr)
18 *((volatile uint *) 0x48004D44) = 0x0001b00c; /* DPLL4 multiplier/divider (CM_CLKSEL2_PLL) */
19 *((volatile uint *) 0x48004E40) = 0x0000100c; /* DSS clock divisors */
20 *((volatile uint *) 0x48004D00) = 0x00370037; /* control DPLL3/4 (CM_CLKEN_PLL) */
22 *((volatile uint *) 0x48050010) = 0x00000003;
23 while ( !(*((volatile uint *) 0x48050014) & 1) ); /* wait for reset to finish */
25 *((volatile uint *) 0x48050410) = 0x00002015;
26 *((volatile uint *) 0x48050444) = 0x00000004;
27 *((volatile uint *) 0x48050464) = 0x0d504300; /* horizontal timing */
28 *((volatile uint *) 0x48050468) = 0x02202700; /* vertical timing */
29 *((volatile uint *) 0x4805046c) = 0x00007000; /* polarities */
31 *((volatile uint *) 0x48050470) = 0x00010002;
33 *((volatile uint *) 0x4805047c) = 0x01df031f; /* display size */
34 *((volatile uint *) 0x48050480) = base_addr;
35 *((volatile uint *) 0x48050484) = base_addr;
36 *((volatile uint *) 0x4805048c) = 0x01df031f;
37 *((volatile uint *) 0x480504a0) = 0x0000008d;
38 *((volatile uint *) 0x480504a4) = 0x03c00200;
40 *((volatile uint *) 0x48050440) = 0x00018329;
41 while (*((volatile uint *) 0x48050440) & (1<<5)); /* wait for GOLCD */
42 *((volatile uint *) 0x48050440) = 0x00018329;
45 /* SPI stuff to set correct clock polarity in the LCD */
46 static void lcd_spi_init(void)
48 /* Enable clock for SPI1 */
49 writel(readl(0x48004A00) | (1<<18), 0x48004A00);
50 writel(readl(0x48004A10) | (1<<18), 0x48004A10);
52 /* Reset module, wait for reset to complete */
53 writel(0x00000002, 0x48098010);
54 while ( !(readl(0x48098014) & 1) );
56 /* SPI1 base address = 0x48098000 for CS0,
57 * for CS1 add 0x14 to the offset where applicable */
58 *((volatile uint *) 0x48098034) = 0x00000000; /* CS0 +8 */
59 *((volatile uint *) 0x48098048) = 0x00000000; /* CS1 +8 */
60 *((volatile uint *) 0x4809801C) = 0x00000000;
61 *((volatile uint *) 0x48098018) = 0xFFFFFFFF;
62 *((volatile uint *) 0x48098024) = 0x00000000;
63 *((volatile uint *) 0x48098028) = 0x00000000;
64 *((volatile uint *) 0x48098010) = 0x00000308;
65 *((volatile uint *) 0x48098040) = 0x020127DC;
66 *((volatile uint *) 0x48098048) = 0x00000001; /* CS1 */
69 static void lcd_spi_write(uint addr, uint data)
72 data |= (addr << 10) | (1 << 8);
74 while ( !(readl(0x48098044) & (1<<1)) ); /* wait for TXS */
76 writel(data, 0x4809804C);
78 while ( !(readl(0x48098044) & (1<<1)) ); /* wait for TXS */
79 while ( !(readl(0x48098044) & (1<<2)) ); /* wait for EOT */
82 static void lcd_init(void)
84 DECLARE_GLOBAL_DATA_PTR;
87 /* make sure LCD nreset is driven low (GPIO157)
88 * (we are called before misc_init_r() which normally handles this stuff) */
89 writel(0x20000000, 0x49056090);
90 writel(readl(0x49056034) & ~0x20000000, 0x49056034);
91 /* also GPIO164 (some audible noise otherwise) */
92 writel(0x10, 0x49058094);
93 writel(readl(0x49058034) & ~0x10, 0x49058034);
97 /* set VPLL2 to 1.8V */
98 twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x05,
99 TWL4030_PM_RECEIVER_VPLL2_DEDICATED);
100 twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20,
101 TWL4030_PM_RECEIVER_VPLL2_DEV_GRP);
103 /* set VAUX1 to 3.0V (LCD) */
104 twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x04,
105 TWL4030_PM_RECEIVER_VAUX1_DEDICATED);
106 twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20,
107 TWL4030_PM_RECEIVER_VAUX1_DEV_GRP);
109 /* Clear frame buffer */
110 memset((void *)gd->fb_base, 0, 800*480*2);
112 writel(0x20000000, 0x49056094); /* Bring LCD out of reset (157) */
113 udelay(2000); /* Need to wait at least 1ms after reset to start sending signals */
115 dss_lcd_init((uint)gd->fb_base);
117 lcd_spi_write(0x02, 0x0f);
118 writel(0, 0x48098048); /* Disable SPI1, CS1 */
120 /* Set GPIOs on T2 (Turn on LCD BL) */
121 twl4030_i2c_read_u8(TWL4030_CHIP_INTBR, &d, TWL_INTBR_PMBR1);
122 d &= ~0x0c; /* switch to GPIO function */
123 twl4030_i2c_write_u8(TWL4030_CHIP_INTBR, d, TWL_INTBR_PMBR1);
125 twl4030_i2c_read_u8(TWL4030_CHIP_GPIO, &d, GPIODATADIR1);
126 d |= 0x40; /* GPIO6 */
127 twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, d, GPIODATADIR1);
128 twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, 0x40, SETGPIODATAOUT1);
131 /* u-boot LCD driver support */
132 vidinfo_t panel_info = {
136 /* vars managed by lcd.c */
141 void *lcd_console_address;
145 void lcd_enable(void)
149 void lcd_ctrl_init(void *lcdbase)
154 /* Calculate fb size for VIDEOLFB_ATAG. */
155 ulong calc_fbsize(void)
157 return (panel_info.vl_col * panel_info.vl_row *
158 NBITS(panel_info.vl_bpix) / 8);
161 #endif /* CONFIG_LCD */