On Tue, Jun 10, 2014 at 11:04 AM, Stéphane Marchesin <marcheu@xxxxxxxxxxxx> wrote: > On Tue, Jun 10, 2014 at 10:56 AM, Kevin Hilman <khilman@xxxxxxxxxx> wrote: >> I'm trying to get the latest linux-next working on my Chromebook2 >> (it's booting to a serial console) and am now trying to get the >> display working (at least for a frambuffer console.) >> >> Since the display nodes seem to be present in the exynos5800-peach-pi >> DTS, I tried enabling DRM and it's failing to allocate memory (log >> below[1] >> >> Is there some additional memory setup/allocations I should be doing? >> maybe with CMA? > > Probably not CMA, but maybe you don't have the iommu enabled? Turns out it was missing CMA support. Specifically: CONFIG_CMA=y CONFIG_DMA_CMA=y are needed (my full .config is here: http://hastebin.com/uqopirazir.vbs) With that, it allocates, appears to detect the panel and even claims "Console: switching to colour frame buffer device", but I don't see tux or any output on the display (DRM debug output below). Note that I'm chain-loading nv_uboot from an SD card, and u-boot is driving the display (black text on white background.) As soon as it starts the kernel though, u-boot seems to shut down the display (though the backlight seems to still be on.) Maybe the DT for peach-pi is missing the regulator used to power the panel, or maybe a GPIO used to power up the panel? Any ideas? Kevin [1] DRM output with drm.debug=0xff (full kernel boot log here: http://hastebin.com/xigofelepe.vhdl [ 1.192850] [drm] Initialized drm 1.1.0 20060810 [ 1.197676] [drm:drm_platform_init] [ 1.200224] [drm:drm_get_platform_dev] [ 1.204092] [drm:drm_minor_register] [ 1.207851] [drm:drm_minor_register] new minor assigned 64 [ 1.213154] [drm:drm_minor_register] [ 1.216791] [drm:drm_minor_register] [ 1.220608] [drm:drm_minor_register] new minor assigned 0 [ 1.225869] [drm:exynos_drm_encoder_create] possible_crtcs = 0x1 [ 1.231820] [drm:exynos_drm_encoder_create] encoder has been created [ 1.238295] [drm:drm_sysfs_connector_add] adding "eDP-1" to sysfs [ 1.244222] [drm:drm_sysfs_hotplug_event] generating hotplug event [ 1.250371] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 1.256953] [drm] No driver support for vblank timestamp query. [ 1.262855] [drm:drm_helper_hpd_irq_event] [CONNECTOR:15:eDP-1] status updated from unknown to connected [ 1.272309] [drm:drm_sysfs_hotplug_event] generating hotplug event [ 1.278480] [drm:exynos_drm_encoder_dpms] encoder dpms: 3 [ 1.283849] [drm:exynos_drm_crtc_dpms] crtc[6] mode[3] [ 1.288964] [drm:exynos_drm_crtc_dpms] desired dpms mode is same as previous one. [ 1.296428] [drm:drm_helper_probe_single_connector_modes_merge_bits] [CONNECTOR:15:eDP-1] [ 1.304588] [drm:drm_helper_probe_single_connector_modes_merge_bits] [CONNECTOR:15:eDP-1] probed modes : [ 1.314043] [drm:drm_mode_debug_printmodeline] Modeline 16:"1920x1080" 60 150660 1920 1980 2060 2232 1080 1090 1100 1125 0x48 0x0 [ 1.325660] [drm:drm_setup_crtcs] [ 1.329044] [drm:drm_enable_connectors] connector 15 enabled? yes [ 1.335116] [drm:drm_target_preferred] looking for cmdline mode on connector 15 [ 1.342402] [drm:drm_target_preferred] looking for preferred mode on connector 15 [ 1.349862] [drm:drm_target_preferred] found mode 1920x1080 [ 1.355414] [drm:drm_setup_crtcs] picking CRTCs for 4096x4096 config [ 1.361749] [drm:drm_setup_crtcs] desired mode 1920x1080 set on crtc 6 [ 1.368257] [drm:exynos_drm_fbdev_create] surface width(1920), height(1080) and bpp(32 [ 1.376150] [drm:exynos_drm_init_buf] desired size = 0x7e9000 [ 1.381886] [drm:exynos_drm_gem_init] created file object = 0xec7e2000 [ 1.391732] [drm:lowlevel_buffer_allocate] dma_addr(0x8e900000), size(0x7e9000) [ 1.397581] [drm:drm_framebuffer_reference] FB ID: 18 [ 1.402614] [drm:exynos_drm_fb_buffer] dma_addr = 0x8e900000 [ 1.408526] [drm:drm_crtc_helper_set_config] [ 1.408531] [drm:drm_crtc_helper_set_config] [CRTC:6] [FB:18] #connectors=1 (x y) (0 0) [ 1.408536] [drm:drm_crtc_helper_set_config] crtc has no fb, full mode set [ 1.408539] [drm:drm_crtc_helper_set_config] modes are different, full mode set [ 1.408544] [drm:drm_mode_debug_printmodeline] Modeline 0:"" 0 0 0 0 0 0 0 0 0 0 0x0 0x0 [ 1.408549] [drm:drm_mode_debug_printmodeline] Modeline 17:"1920x1080" 60 150660 1920 1980 2060 2232 1080 1090 1100 1125 0x48 0x0 [ 1.408553] [drm:drm_crtc_helper_set_config] encoder changed, full mode switch [ 1.408556] [drm:drm_crtc_helper_set_config] crtc changed, full mode switch [ 1.408560] [drm:drm_crtc_helper_set_config] [CONNECTOR:15:eDP-1] to [CRTC:6] [ 1.408563] [drm:drm_crtc_helper_set_config] attempting to set mode from userspace [ 1.408568] [drm:drm_mode_debug_printmodeline] Modeline 17:"1920x1080" 60 150660 1920 1980 2060 2232 1080 1090 1100 1125 0x48 0x0 [ 1.408574] [drm:drm_crtc_helper_set_mode] [CRTC:6] [ 1.408579] [drm:exynos_drm_fb_buffer] dma_addr = 0x8e900000 [ 1.408582] [drm:exynos_plane_mode_set] buffer: 0, dma_addr = 0x8e900000 [ 1.408590] [drm:exynos_plane_mode_set] overlay : offset_x/y(0,0), width/height(1920,1080) [ 1.408591] [drm:fimd_win_mode_set] offset = 0x0, pitch = 1e00 [ 1.408595] [drm:fimd_win_mode_set] offset_x = 0, offset_y = 0 [ 1.408598] [drm:fimd_win_mode_set] ovl_width = 1920, ovl_height = 1080 [ 1.408601] [drm:fimd_win_mode_set] paddr = 0x8e900000 [ 1.408604] [drm:fimd_win_mode_set] fb_width = 1920, crtc_width = 1920 [ 1.408607] [drm:drm_framebuffer_reference] FB ID: 18 [ 1.408611] [drm:drm_crtc_helper_set_mode] [ENCODER:14:TMDS-14] set [MODE:17:1920x1080] [ 1.408614] [drm:exynos_drm_crtc_dpms] crtc[6] mode[0] [ 1.408618] [drm:fimd_dpms] ../drivers/gpu/drm/exynos/exynos_drm_fimd.c, 0 [ 1.408649] [drm:fimd_win_commit] start addr = 0x8e900000, end addr = 0x8f0e9000, size = 0x7e9000 [ 1.408652] [drm:fimd_win_commit] ovl_width = 1920, ovl_height = 1080 [ 1.408656] [drm:fimd_win_commit] osd pos: tx = 0, ty = 0, bx = 1919, by = 1079 [ 1.408660] [drm:fimd_win_commit] osd size = 0x1fa400 [ 1.408663] [drm:fimd_win_set_pixfmt] bpp = 32 [ 1.408948] [drm:drm_calc_timestamping_constants] crtc 6: hwmode: htotal 2232, vtotal 1125, vdisplay 1080 [ 1.408953] [drm:drm_calc_timestamping_constants] crtc 6: clock 150660 kHz framedur 16666666 linedur 14814, pixeldur 6 [ 1.408958] [drm:drm_crtc_helper_set_config] Setting connector DPMS state to on [ 1.408961] [drm:drm_crtc_helper_set_config] [CONNECTOR:15:eDP-1] set DPMS on [ 1.408966] [drm:drm_framebuffer_reference] FB ID: 18 [ 1.409097] [drm:drm_crtc_helper_set_config] [ 1.409102] [drm:drm_crtc_helper_set_config] [CRTC:6] [FB:18] #connectors=1 (x y) (0 0) [ 1.409107] [drm:drm_crtc_helper_set_config] [CONNECTOR:15:eDP-1] to [CRTC:6] [ 1.409110] [drm:drm_framebuffer_reference] FB ID: 18 [ 1.409113] [drm:drm_framebuffer_unreference] FB ID: 18 [ 1.422580] Console: switching to colour frame buffer device 274x77 [ 1.422587] [drm:drm_crtc_helper_set_config] [ 1.422591] [drm:drm_crtc_helper_set_config] [CRTC:6] [FB:18] #connectors=1 (x y) (0 0) [ 1.422596] [drm:drm_crtc_helper_set_config] [CONNECTOR:15:eDP-1] to [CRTC:6] [ 1.422600] [drm:drm_framebuffer_reference] FB ID: 18 [ 1.422603] [drm:drm_framebuffer_unreference] FB ID: 18 [ 1.745135] exynos-drm exynos-drm: fb0: frame buffer device [ 1.752593] exynos-drm exynos-drm: registered panic notifier [ 1.773526] [drm] Initialized exynos 1.0.0 20110530 on minor 0 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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