Hi Thierry, On Thu, Jul 19, 2012 at 8:58 AM, Thierry Reding <thierry.red...@avionic-design.de> wrote: > On Thu, Jul 12, 2012 at 08:25:00AM -0700, Simon Glass wrote: >> This series adds support for the Tegra2x's display peripheral. This >> supports the LCD display on Seaboard and we use this to enable console >> output in U-Boot on the LCD. >> >> Configuration is via the device tree. Proposed bindings are included >> in this series, taken from pwm bindings that should be in linux-next, >> a Tegra video binding that might be accepted in devicetree-discuss >> and a proposed video mode binding posted to dri-devel. >> >> While I agree EDID is convenient for machines I would prefer to provide >> a user-friendly way of selecting LCD settings as well, with EDID more >> as a fallback and auto-detection when available. >> >> To improve performance two optimisations are offered: >> >> 1. The LCD frame buffer is cached, with the cache being flushed after >> each newline sent to putc(), and in a few other situations. This >> dramatically increases performance (around 10x). This requires a few >> additions to the ARM cache support. >> >> 2. The console supports scrolling in steps of more than 1 line. This >> speeds up scrolling output considerably, particularly commands like >> 'printenv' which display a lot of output, and particular when the >> dcache is off. This requires a new CONFIG and a change to the >> console_scrollup() function. >> >> Changes in v2: >> - Add new patch to use const in pinmux_config_pingroup/table() >> - Add nvidia prefix to device tree properties >> - Align tegra display using new CONFIG_LCD_ALIGNMENT feature >> - Put the LCD cache flush logic into lcd_putc() instead of lcd_puts() >> - Update LCD driver to deal with new fdt bindings >> - Update seaboard LCD definitions for new fdt binding >> - Use a more generic config CONFIG_LCD_ALIGNMENT for lcd alignment >> - Use const where possible in funcmux >> >> Changes in v3: >> - Add new commit for pwm binding and node >> - Add new panel binding to fit with tegra display controller binding >> - Add probe function to read in fdt parameters in display driver >> - Add separate call to pwm_init() in board_init() >> - Adjust LCD driver to use new SOC display driver structures >> - Bring in proposed tegra display controller binding >> - Decode fdt node within the pwm driver >> - Fix tiny bug in mult-line lcd scrolling >> - Handle a cached frame buffer out of normal U-Boot memory >> - Introduce concept of a pwm channel, rather than separate peripherals >> - Move some fdt decode code from LCD driver to SOC display driver >> - Put the LCD cache flush logic back into lcd_puts() >> - Remove LPW1 pin which is not needed by display >> - Remove spurious newline from fdtdec_get_addr() debug output >> - Rename fdt config structures >> - Rename pwfm driver to pwm >> - Separate display driver and LCD driver more in fdt >> - Tidy up fdtdec_decode_gpios() debug output >> - Use displaymode binding for fdt >> - Use new proposed upstream pwm binding >> - Use new pwm binding from pre-linux-next >> - Use new upstream proposed LCD definitions >> >> Mayuresh Kulkarni (1): >> tegra: Enable display/lcd support on Seaboard >> >> Simon Glass (16): >> fdt: Tidy debugging, add to fdtdec_get_int/addr() >> fdt: Add header guard to fdtdec.h >> tegra: Use const for pinmux_config_pingroup/table() >> tegra: Add display support to funcmux >> tegra: fdt: Add pwm binding and node >> tegra: fdt: Add LCD definitions for Tegra >> tegra: Add support for PWM >> tegra: Add LCD driver >> tegra: Add LCD support to Nvidia boards >> arm: Add control over cachability of memory regions >> lcd: Add CONFIG_LCD_ALIGNMENT to select frame buffer alignment >> lcd: Add support for flushing LCD fb from dcache after update >> tegra: Align LCD frame buffer to section boundary >> tegra: Support control of cache settings for LCD >> tegra: fdt: Add LCD definitions for Seaboard >> lcd: Add CONSOLE_SCROLL_LINES option to speed console >> >> Wei Ni (1): >> tegra: Add SOC support for display/lcd > > I was able to make this work on the Medcom with the one workaround to > make backlight and panel GPIOs optional and adding the corresponding DTS > and configuration entries for Medcom, so: > > Tested-by: Thierry Reding <thierry.red...@avionic-design.de>
Thanks, I am waiting until the binding is agreed before addressing comments and sending a new version. > > The display corruption does no longer seem to happen. While I haven't > thoroughly reviewed, I think this is in pretty good shape. Thanks Simon. > > Thierry Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot