diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/video/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/mvebu_lcd.c | 532 |
3 files changed, 540 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 912e397..4e706b7 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -293,6 +293,13 @@ config VIDEO_LCD_SPI_MISO option takes a string in the format understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H. +config VIDEO_MVEBU + bool "Armada XP LCD controller" + default n + ---help--- + Support for the LCD controller integrated in the Marvell + Armada XP SoC. + config DISPLAY bool "Enable Display support" depends on DM diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 0910510..be908f6 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -47,6 +47,7 @@ obj-$(CONFIG_VIDEO_LCD_SSD2828) += ssd2828.o obj-$(CONFIG_VIDEO_MB862xx) += mb862xx.o videomodes.o obj-$(CONFIG_VIDEO_MX3) += mx3fb.o videomodes.o obj-$(CONFIG_VIDEO_IPUV3) += mxc_ipuv3_fb.o ipu_common.o ipu_disp.o +obj-$(CONFIG_VIDEO_MVEBU) += mvebu_lcd.o obj-$(CONFIG_VIDEO_MXS) += mxsfb.o videomodes.o obj-$(CONFIG_VIDEO_OMAP3) += omap3_dss.o obj-$(CONFIG_VIDEO_SANDBOX_SDL) += sandbox_sdl.o diff --git a/drivers/video/mvebu_lcd.c b/drivers/video/mvebu_lcd.c new file mode 100644 index 0000000..86dae52 --- /dev/null +++ b/drivers/video/mvebu_lcd.c @@ -0,0 +1,532 @@ +/* + * Video driver for Marvell Armada XP SoC + * + * Initialization of LCD interface and setup of SPLASH screen image + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <video_fb.h> +#include <linux/mbus.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> +#include <asm/arch/soc.h> + +#define MVEBU_LCD_WIN_CONTROL(w) (MVEBU_LCD_BASE + 0xf000 + ((w) << 4)) +#define MVEBU_LCD_WIN_BASE(w) (MVEBU_LCD_BASE + 0xf004 + ((w) << 4)) +#define MVEBU_LCD_WIN_REMAP(w) (MVEBU_LCD_BASE + 0xf00c + ((w) << 4)) + +#define MVEBU_LCD_CFG_DMA_START_ADDR_0 (MVEBU_LCD_BASE + 0x00cc) +#define MVEBU_LCD_CFG_DMA_START_ADDR_1 (MVEBU_LCD_BASE + 0x00dc) + +#define MVEBU_LCD_CFG_GRA_START_ADDR0 (MVEBU_LCD_BASE + 0x00f4) +#define MVEBU_LCD_CFG_GRA_START_ADDR1 (MVEBU_LCD_BASE + 0x00f8) +#define MVEBU_LCD_CFG_GRA_PITCH (MVEBU_LCD_BASE + 0x00fc) +#define MVEBU_LCD_SPU_GRA_OVSA_HPXL_VLN (MVEBU_LCD_BASE + 0x0100) +#define MVEBU_LCD_SPU_GRA_HPXL_VLN (MVEBU_LCD_BASE + 0x0104) +#define MVEBU_LCD_SPU_GZM_HPXL_VLN (MVEBU_LCD_BASE + 0x0108) +#define MVEBU_LCD_SPU_HWC_OVSA_HPXL_VLN (MVEBU_LCD_BASE + 0x010c) +#define MVEBU_LCD_SPU_HWC_HPXL_VLN (MVEBU_LCD_BASE + 0x0110) +#define MVEBU_LCD_SPUT_V_H_TOTAL (MVEBU_LCD_BASE + 0x0114) +#define MVEBU_LCD_SPU_V_H_ACTIVE (MVEBU_LCD_BASE + 0x0118) +#define MVEBU_LCD_SPU_H_PORCH (MVEBU_LCD_BASE + 0x011c) +#define MVEBU_LCD_SPU_V_PORCH (MVEBU_LCD_BASE + 0x0120) +#define MVEBU_LCD_SPU_BLANKCOLOR (MVEBU_LCD_BASE + 0x0124) +#define MVEBU_LCD_SPU_ALPHA_COLOR1 (MVEBU_LCD_BASE + 0x0128) +#define MVEBU_LCD_SPU_ALPHA_COLOR2 (MVEBU_LCD_BASE + 0x012c) +#define MVEBU_LCD_SPU_COLORKEY_Y (MVEBU_LCD_BASE + 0x0130) +#define MVEBU_LCD_SPU_COLORKEY_U (MVEBU_LCD_BASE + 0x0134) +#define MVEBU_LCD_SPU_COLORKEY_V (MVEBU_LCD_BASE + 0x0138) +#define MVEBU_LCD_CFG_RDREG4F (MVEBU_LCD_BASE + 0x013c) +#define MVEBU_LCD_SPU_SPI_RXDATA (MVEBU_LCD_BASE + 0x0140) +#define MVEBU_LCD_SPU_ISA_RXDATA (MVEBU_LCD_BASE + 0x0144) +#define MVEBU_LCD_SPU_DBG_ISA (MVEBU_LCD_BASE + 0x0148) + +#define MVEBU_LCD_SPU_HWC_RDDAT (MVEBU_LCD_BASE + 0x0158) +#define MVEBU_LCD_SPU_GAMMA_RDDAT (MVEBU_LCD_BASE + 0x015c) +#define MVEBU_LCD_SPU_PALETTE_RDDAT (MVEBU_LCD_BASE + 0x0160) +#define MVEBU_LCD_SPU_IOPAD_IN (MVEBU_LCD_BASE + 0x0178) +#define MVEBU_LCD_FRAME_COUNT (MVEBU_LCD_BASE + 0x017c) +#define MVEBU_LCD_SPU_DMA_CTRL0 (MVEBU_LCD_BASE + 0x0190) +#define MVEBU_LCD_SPU_DMA_CTRL1 (MVEBU_LCD_BASE + 0x0194) +#define MVEBU_LCD_SPU_SRAM_CTRL (MVEBU_LCD_BASE + 0x0198) +#define MVEBU_LCD_SPU_SRAM_WRDAT (MVEBU_LCD_BASE + 0x019c) +#define MVEBU_LCD_SPU_SRAM_PARA0 (MVEBU_LCD_BASE + 0x01a0) +#define MVEBU_LCD_SPU_SRAM_PARA1 (MVEBU_LCD_BASE + 0x01a4) +#define MVEBU_LCD_CFG_SCLK_DIV (MVEBU_LCD_BASE + 0x01a8) +#define MVEBU_LCD_SPU_CONTRAST (MVEBU_LCD_BASE + 0x01ac) +#define MVEBU_LCD_SPU_SATURATION (MVEBU_LCD_BASE + 0x01b0) +#define MVEBU_LCD_SPU_CBSH_HUE (MVEBU_LCD_BASE + 0x01b4) +#define MVEBU_LCD_SPU_DUMB_CTRL (MVEBU_LCD_BASE + 0x01b8) +#define MVEBU_LCD_SPU_IOPAD_CONTROL (MVEBU_LCD_BASE + 0x01bc) +#define MVEBU_LCD_SPU_IRQ_ENA_2 (MVEBU_LCD_BASE + 0x01d8) +#define MVEBU_LCD_SPU_IRQ_ISR_2 (MVEBU_LCD_BASE + 0x01dc) +#define MVEBU_LCD_SPU_IRQ_ENA (MVEBU_LCD_BASE + 0x01c0) +#define MVEBU_LCD_SPU_IRQ_ISR (MVEBU_LCD_BASE + 0x01c4) +#define MVEBU_LCD_ADLL_CTRL (MVEBU_LCD_BASE + 0x01c8) +#define MVEBU_LCD_CLK_DIS (MVEBU_LCD_BASE + 0x01cc) +#define MVEBU_LCD_VGA_HVSYNC_DELAY (MVEBU_LCD_BASE + 0x01d4) +#define MVEBU_LCD_CLK_CFG_0 (MVEBU_LCD_BASE + 0xf0a0) +#define MVEBU_LCD_CLK_CFG_1 (MVEBU_LCD_BASE + 0xf0a4) +#define MVEBU_LCD_LVDS_CLK_CFG (MVEBU_LCD_BASE + 0xf0ac) + +#define MVEBU_LVDS_PADS_REG (MVEBU_SYSTEM_REG_BASE + 0xf0) + +/* Setup Mbus Bridge Windows for LCD */ +static void mvebu_lcd_conf_mbus_registers(void) +{ + const struct mbus_dram_target_info *dram; + int i; + + dram = mvebu_mbus_dram_info(); + + /* Disable windows, set size/base/remap to 0 */ + for (i = 0; i < 6; i++) { + writel(0, MVEBU_LCD_WIN_CONTROL(i)); + writel(0, MVEBU_LCD_WIN_BASE(i)); + writel(0, MVEBU_LCD_WIN_REMAP(i)); + } + + /* Write LCD bridge window registers */ + for (i = 0; i < dram->num_cs; i++) { + const struct mbus_dram_window *cs = dram->cs + i; + writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) | + (dram->mbus_dram_target_id << 4) | 1, + MVEBU_LCD_WIN_CONTROL(i)); + + writel(cs->base & 0xffff0000, MVEBU_LCD_WIN_BASE(i)); + } +} + +/* Initialize LCD registers */ +int mvebu_lcd_register_init(struct mvebu_lcd_info *lcd_info) +{ + /* Local variable for easier handling */ + int x = lcd_info->x_res; + int y = lcd_info->y_res; + u32 val; + + /* Setup Mbus Bridge Windows */ + mvebu_lcd_conf_mbus_registers(); + + /* + * Set LVDS Pads Control Register + * wr 0 182F0 FFE00000 + */ + clrbits_le32(MVEBU_LVDS_PADS_REG, 0x1f << 16); + + /* + * Set the LCD_CFG_GRA_START_ADDR0/1 Registers + * This is supposed to point to the "physical" memory at memory + * end (currently 1GB-64MB but also may be 2GB-64MB). + * See also the Window 0 settings! + */ + writel(lcd_info->fb_base, MVEBU_LCD_CFG_GRA_START_ADDR0); + writel(lcd_info->fb_base, MVEBU_LCD_CFG_GRA_START_ADDR1); + + /* + * Set the LCD_CFG_GRA_PITCH Register + * Bits 31-28: Duty Cycle of Backlight. value/16=High (0x8=Mid Setting) + * Bits 25-16: Backlight divider from 32kHz Clock + * (here 16=0x10 for 1kHz) + * Bits 15-00: Line Length in Bytes + * 240*2 (for RGB1555)=480=0x1E0 + */ + writel(0x80100000 + 2 * x, MVEBU_LCD_CFG_GRA_PITCH); + + /* + * Set the LCD_SPU_GRA_OVSA_HPXL_VLN Register + * Bits 31-16: Vertical start of graphical overlay on screen + * Bits 15-00: Horizontal start of graphical overlay on screen + */ + writel(0x00000000, MVEBU_LCD_SPU_GRA_OVSA_HPXL_VLN); + + /* + * Set the LCD_SPU_GRA_HPXL_VLN Register + * Bits 31-16: Vertical size of graphical overlay 320=0x140 + * Bits 15-00: Horizontal size of graphical overlay 240=0xF0 + * Values before zooming + */ + writel((y << 16) | x, MVEBU_LCD_SPU_GRA_HPXL_VLN); + + /* + * Set the LCD_SPU_GZM_HPXL_VLN Register + * Bits 31-16: Vertical size of graphical overlay 320=0x140 + * Bits 15-00: Horizontal size of graphical overlay 240=0xF0 + * Values after zooming + */ + writel((y << 16) | x, MVEBU_LCD_SPU_GZM_HPXL_VLN); + + /* + * Set the LCD_SPU_HWC_OVSA_HPXL_VLN Register + * Bits 31-16: Vertical position of HW Cursor 320=0x140 + * Bits 15-00: Horizontal position of HW Cursor 240=0xF0 + */ + writel((y << 16) | x, MVEBU_LCD_SPU_HWC_OVSA_HPXL_VLN); + + /* + * Set the LCD_SPU_HWC_OVSA_HPXL_VLN Register + * Bits 31-16: Vertical size of HW Cursor + * Bits 15-00: Horizontal size of HW Cursor + */ + writel(0x00000000, MVEBU_LCD_SPU_HWC_HPXL_VLN); + + /* + * Set the LCD_SPU_HWC_OVSA_HPXL_VLN Register + * Bits 31-16: Screen total vertical lines: + * VSYNC = 1 + * Vertical Front Porch = 2 + * Vertical Lines = 320 + * Vertical Back Porch = 2 + * SUM = 325 = 0x0145 + * Bits 15-00: Screen total horizontal pixels: + * HSYNC = 1 + * Horizontal Front Porch = 44 + * Horizontal Lines = 240 + * Horizontal Back Porch = 2 + * SUM = 287 = 0x011F + * Note: For the display the backporch is between SYNC and + * the start of the pixels. + * This is not certain for the Marvell (!?) + */ + val = ((y + lcd_info->y_fp + lcd_info->y_bp + 1) << 16) | + (x + lcd_info->x_fp + lcd_info->x_bp + 1); + writel(val, MVEBU_LCD_SPUT_V_H_TOTAL); + + /* + * Set the LCD_SPU_V_H_ACTIVE Register + * Bits 31-16: Screen active vertical lines 320=0x140 + * Bits 15-00: Screen active horizontakl pixels 240=0x00F0 + */ + writel((y << 16) | x, MVEBU_LCD_SPU_V_H_ACTIVE); + + /* + * Set the LCD_SPU_H_PORCH Register + * Bits 31-16: Screen horizontal backporch 44=0x2c + * Bits 15-00: Screen horizontal frontporch 2=0x02 + * Note: The terms "front" and "back" for the Marvell seem to be + * exactly opposite to the display. + */ + writel((lcd_info->x_fp << 16) | lcd_info->x_bp, MVEBU_LCD_SPU_H_PORCH); + + /* + * Set the LCD_SPU_V_PORCH Register + * Bits 31-16: Screen vertical backporch 2=0x02 + * Bits 15-00: Screen vertical frontporch 2=0x02 + * Note: The terms "front" and "back" for the Marvell seem to be exactly + * opposite to the display. + */ + writel((lcd_info->y_fp << 16) | lcd_info->y_bp, MVEBU_LCD_SPU_V_PORCH); + + /* + * Set the LCD_SPU_BLANKCOLOR Register + * This should be black = 0 + * For tests this is magenta=00FF00FF + */ + writel(0x00FF00FF, MVEBU_LCD_SPU_BLANKCOLOR); + + /* + * Registers in the range of 0x0128 to 0x012C are colors for the cursor + * Registers in the range of 0x0130 to 0x0138 are colors for video + * color keying + */ + + /* + * Set the LCD_SPU_RDREG4F Register + * Bits 31-12: Reservd + * Bit 11: SRAM Wait + * Bit 10: Smart display fast TX (must be 1) + * Bit 9: DMA Arbitration Video/Graphics overlay: 0=interleaved + * Bit 8: FIFO watermark for DMA: 0=disable + * Bits 07-00: Empty 8B FIFO entries to trigger DMA, default=0x80 + */ + writel(0x00000780, MVEBU_LCD_CFG_RDREG4F); + + /* + * Set the LCD_SPU_DMACTRL 0 Register + * Bit 31: Disable overlay blending 1=disable + * Bit 30: Gamma correction enable, 0=disable + * Bit 29: Video Contrast/Saturation/Hue Adjust enable, 0=disable + * Bit 28: Color palette enable, 0=disable + * Bit 27: DMA AXI Arbiter, 1=default + * Bit 26: HW Cursor 1-bit mode + * Bit 25: HW Cursor or 1- or 2-bit mode + * Bit 24: HW Cursor enabled, 0=disable + * Bits 23-20: Graphics Memory Color Format: 0x1=RGB1555 + * Bits 19-16: Video Memory Color Format: 0x1=RGB1555 + * Bit 15: Memory Toggle between frame 0 and 1: 0=disable + * Bit 14: Graphics horizontal scaling enable: 0=disable + * Bit 13: Graphics test mode: 0=disable + * Bit 12: Graphics SWAP R and B: 0=disable + * Bit 11: Graphics SWAP U and V: 0=disable + * Bit 10: Graphics SWAP Y and U/V: 0=disable + * Bit 09: Graphic YUV to RGB Conversion: 0=disable + * Bit 08: Graphic Transfer: 1=enable + * Bit 07: Memory Toggle: 0=disable + * Bit 06: Video horizontal scaling enable: 0=disable + * Bit 05: Video test mode: 0=disable + * Bit 04: Video SWAP R and B: 0=disable + * Bit 03: Video SWAP U and V: 0=disable + * Bit 02: Video SWAP Y and U/V: 0=disable + * Bit 01: Video YUV to RGB Conversion: 0=disable + * Bit 00: Video Transfer: 0=disable + */ + writel(0x88111100, MVEBU_LCD_SPU_DMA_CTRL0); + + /* + * Set the LCD_SPU_DMA_CTRL1 Register + * Bit 31: Manual DMA Trigger = 0 + * Bits 30-28: DMA Trigger Source: 0x2 VSYNC + * Bit 28: VSYNC_INV: 0=Rising Edge, 1=Falling Edge + * Bits 26-24: Color Key Mode: 0=disable + * Bit 23: Fill low bits: 0=fill with zeroes + * Bit 22: Reserved + * Bit 21: Gated Clock: 0=disable + * Bit 20: Power Save enable: 0=disable + * Bits 19-18: Reserved + * Bits 17-16: Configure Video/Graphic Path: 0x1: Graphic path alpha. + * Bits 15-08: Configure Alpha: 0x00. + * Bits 07-00: Reserved. + */ + writel(0x20010000, MVEBU_LCD_SPU_DMA_CTRL1); + + /* + * Set the LCD_SPU_SRAM_CTRL Register + * Reset to default = 0000C000 + * Bits 15-14: SRAM control: init=0x3, Read=0, Write=2 + * Bits 11-08: SRAM address ID: 0=gamma_yr, 1=gammy_ug, 2=gamma_vb, + * 3=palette, 15=cursor + */ + writel(0x0000C000, MVEBU_LCD_SPU_SRAM_CTRL); + + /* + * LCD_SPU_SRAM_WRDAT register: 019C + * LCD_SPU_SRAM_PARA0 register: 01A0 + * LCD_SPU_SRAM_PARA1 register: 01A4 - Cursor control/Power settings + */ + writel(0x00000000, MVEBU_LCD_SPU_SRAM_PARA1); + + + /* Clock settings in the at 01A8 and in the range F0A0 see below */ + + /* + * Set LCD_SPU_CONTRAST + * Bits 31-16: Brightness sign ext. 8-bit value +255 to -255: default=0 + * Bits 15-00: Contrast sign ext. 8-bit value +255 to -255: default=0 + */ + writel(0x00000000, MVEBU_LCD_SPU_CONTRAST); + + /* + * Set LCD_SPU_SATURATION + * Bits 31-16: Multiplier signed 4.12 fixed point value + * Bits 15-00: Saturation signed 4.12 fixed point value + */ + writel(0x10001000, MVEBU_LCD_SPU_SATURATION); + + /* + * Set LCD_SPU_HUE + * Bits 31-16: Sine signed 2.14 fixed point value + * Bits 15-00: Cosine signed 2.14 fixed point value + */ + writel(0x00000000, MVEBU_LCD_SPU_CBSH_HUE); + + /* + * Set LCD_SPU_DUMB_CTRL + * Bits 31-28: LCD Type: 3=18 bit RGB | 6=24 bit RGB888 + * Bits 27-12: Reserved + * Bit 11: LCD DMA Pipeline Enable: 1=Enable + * Bits 10-09: Reserved + * Bit 8: LCD GPIO pin (??) + * Bit 7: Reverse RGB + * Bit 6: Invert composite blank signal DE/EN (??) + * Bit 5: Invert composite sync signal + * Bit 4: Invert Pixel Valid Enable DE/EN (??) + * Bit 3: Invert VSYNC + * Bit 2: Invert HSYNC + * Bit 1: Invert Pixel Clock + * Bit 0: Enable LCD Panel: 1=Enable + * Question: Do we have to disable Smart and Dumb LCD + * and separately enable LVDS? + */ + writel(0x6000080F, MVEBU_LCD_SPU_DUMB_CTRL); + + /* + * Set LCD_SPU_IOPAD_CTRL + * Bits 31-20: Reserved + * Bits 19-18: Vertical Interpolation: 0=Disable + * Bits 17-16: Reserved + * Bit 15: Graphics Vertical Mirror enable: 0=disable + * Bit 14: Reserved + * Bit 13: Video Vertical Mirror enable: 0=disable + * Bit 12: Reserved + * Bit 11: Command Vertical Mirror enable: 0=disable + * Bit 10: Reserved + * Bits 09-08: YUV to RGB Color space conversion: 0 (Not used) + * Bits 07-04: AXI Bus Master: 0x4: no crossing of 4k boundary, + * 128 Bytes burst + * Bits 03-00: LCD pins: ??? 0=24-bit Dump panel ?? + */ + writel(0x000000C0, MVEBU_LCD_SPU_IOPAD_CONTROL); + + /* + * Set SUP_IRQ_ENA_2: Disable all interrupts + */ + writel(0x00000000, MVEBU_LCD_SPU_IRQ_ENA_2); + + /* + * Set SUP_IRQ_ENA: Disable all interrupts. + */ + writel(0x00000000, MVEBU_LCD_SPU_IRQ_ENA); + + /* + * Set up ADDL Control Register + * Bits 31-29: 0x0 = Fastest Delay Line (default) + * 0x3 = Slowest Delay Line (default) + * Bit 28: Calibration done status. + * Bit 27: Reserved + * Bit 26: Set Pixel Clock to ADDL output + * Bit 25: Reduce CAL Enable + * Bits 24-22: Manual calibration value. + * Bit 21: Manual calibration enable. + * Bit 20: Restart Auto Cal + * Bits 19-16: Calibration Threshold voltage, default= 0x2 + * Bite 15-14: Reserved + * Bits 13-11: Divisor for ADDL Clock: 0x1=/2, 0x3=/8, 0x5=/16 + * Bit 10: Power Down ADDL module, default = 1! + * Bits 09-08: Test point configuration: 0x2=Bias, 0x3=High-z + * Bit 07: Reset ADDL + * Bit 06: Invert ADLL Clock + * Bits 05-00: Delay taps, 0x3F=Half Cycle, 0x00=No delay + * Note: ADLL is used for a VGA interface with DAC - not used here + */ + writel(0x00000000, MVEBU_LCD_ADLL_CTRL); + + /* + * Set the LCD_CLK_DIS Register: + * Bits 3 and 4 must be 1 + */ + writel(0x00000018, MVEBU_LCD_CLK_DIS); + + /* + * Set the LCD_VGA_HSYNC/VSYNC Delay Register: + * Bits 03-00: Sets the delay for the HSYNC and VSYNC signals + */ + writel(0x00000000, MVEBU_LCD_VGA_HVSYNC_DELAY); + + /* + * Clock registers + * See page 475 in the functional spec. + */ + + /* Step 1 and 2: Disable the PLL */ + + /* + * Disable PLL, see "LCD Clock Configuration 1 Register" below + */ + writel(0x8FF40007, MVEBU_LCD_CLK_CFG_1); + + /* + * Powerdown, see "LCD Clock Configuration 0 Register" below + */ + writel(0x94000174, MVEBU_LCD_CLK_CFG_0); + + /* + * Set the LCD_CFG_SCLK_DIV Register + * This is set fix to 0x40000001 for the LVDS output: + * Bits 31-30: SCLCK Source: 0=AXIBus, 1=AHBus, 2=PLLDivider0 + * Bits 15-01: Clock Divider: Bypass for LVDS=0x0001 + * See page 475 in section 28.5. + */ + writel(0x80000001, MVEBU_LCD_CFG_SCLK_DIV); + + /* + * Set the LCD Clock Configuration 0 Register: + * Bit 31: Powerdown: 0=Power up + * Bits 30-29: Reserved + * Bits 28-26: PLL_KDIV: This encodes K + * K=16 => 0x5 + * Bits 25-17: PLL_MDIV: This is M-1: + * M=1 => 0x0 + * Bits 16-13: VCO band: 0x1 for 700-920MHz + * Bits 12-04: PLL_NDIV: This is N-1 and corresponds to R1_CTRL! + * N=28=0x1C => 0x1B + * Bits 03-00: R1_CTRL (for N=28 => 0x4) + */ + writel(0x940021B4, MVEBU_LCD_CLK_CFG_0); + + /* + * Set the LCD Clock Configuration 1 Register: + * Bits 31-19: Reserved + * Bit 18: Select PLL: Core PLL, 1=Dedicated PPL + * Bit 17: Clock Output Enable: 0=disable, 1=enable + * Bit 16: Select RefClk: 0=RefClk (25MHz), 1=External + * Bit 15: Half-Div, Device Clock by DIV+0.5*Half-Dev + * Bits 14-13: Reserved + * Bits 12-00: PLL Full Divider [Note: Assumed to be the Post-Divider + * M' for LVDS=7!] + */ + writel(0x8FF40007, MVEBU_LCD_CLK_CFG_1); + + /* + * Set the LVDS Clock Configuration Register: + * Bit 31: Clock Gating for the input clock to the LVDS + * Bit 30: LVDS Serializer enable: 1=Enabled + * Bits 29-11: Reserved + * Bit 11-08: LVDS Clock delay: 0x02 (default): by 2 pixel clock/7 + * Bits 07-02: Reserved + * Bit 01: 24bbp Option: 0=Option_1,1=Option2 + * Bit 00: 1=24bbp Panel: 0=18bpp Panel + * Note: Bits 0 and must be verified with the help of the + * Interface/display + */ + writel(0xC0000201, MVEBU_LCD_LVDS_CLK_CFG); + + /* + * Power up PLL (Clock Config 0) + */ + writel(0x140021B4, MVEBU_LCD_CLK_CFG_0); + + /* wait 10 ms */ + mdelay(10); + + /* + * Enable PLL (Clock Config 1) + */ + writel(0x8FF60007, MVEBU_LCD_CLK_CFG_1); + + return 0; +} + +int __weak board_video_init(void) +{ + return -1; +} + +void *video_hw_init(void) +{ + static GraphicDevice mvebufb; + GraphicDevice *pGD = &mvebufb; + u32 val; + + /* + * The board code needs to call mvebu_lcd_register_init() + * in its board_video_init() implementation, with the board + * specific parameters for its LCD. + */ + if (board_video_init() || !readl(MVEBU_LCD_CFG_GRA_START_ADDR0)) + return NULL; + + /* Provide the necessary values for the U-Boot video IF */ + val = readl(MVEBU_LCD_SPU_V_H_ACTIVE); + pGD->winSizeY = val >> 16; + pGD->winSizeX = val & 0x0000ffff; + pGD->gdfBytesPP = 2; + pGD->gdfIndex = GDF_15BIT_555RGB; + pGD->frameAdrs = readl(MVEBU_LCD_CFG_GRA_START_ADDR0); + + debug("LCD: buffer at 0x%08x resolution %dx%d\n", pGD->frameAdrs, + pGD->winSizeX, pGD->winSizeY); + + return pGD; +} |