AM3359 24bit 1024*768 LCD 出错“LCD: kmalloc for frame buffer failed”?
[ 1.308959] da8xx_lcdc.0: alias fck already exists
[ 1.314666] da8xx_lcdc da8xx_lcdc.0: GLCD: Found TFC_S9700RTWV35TR_01B panel
[ 1.323120] ------------[ cut here ]------------ [ 1.328033] WARNING: at mm/page_alloc.c:2110 __alloc_pages_nodemask+0x458/0x62c()
[ 1.335906] Modules linked in:
[ 1.339141] Backtrace:
[ 1.341735] [<c001803c>] (dump_backtrace+0x0/0x10c) from [<c04d5438>] (dump_stack+0x18/0x1c)
[ 1.350646] r7:00000009 r6:0000083e r5:c00840a0 r4:00000000
[ 1.356628] [<c04d5420>] (dump_stack+0x0/0x1c) from [<c003d284>] (warn_slowpath_common+0x54/0x6c)
[ 1.365997] [<c003d230>] (warn_slowpath_common+0x0/0x6c) from [<c003d2c0>] (warn_slowpath_null+0x24/0x2c)
[ 1.376068] r9:c06f3ce0 r8:00000000 r7:00000000 r6:c069e110 r5:c0708028
[ 1.382965] r4:00000000 [ 1.385742] [<c003d29c>] (warn_slowpath_null+0x0/0x2c) from [<c00840a0>] (__alloc_pages_nodemask+0x458/0x62c)
[ 1.396209] [<c0083c48>] (__alloc_pages_nodemask+0x0/0x62c) from [<c001a2c8>] (__dma_alloc+0x90/0x308)
[ 1.406036] [<c001a238>] (__dma_alloc+0x0/0x308) from [<c001a5d0>] (dma_alloc_coherent+0x5c/0x68)
[ 1.415374] [<c001a574>] (dma_alloc_coherent+0x0/0x68) from [<c04cd0cc>] (fb_probe+0x7a8/0xbc4)
[ 1.424530] r7:cf9bc608 r6:007d0000 r5:cf9c1a54 r4:c06d2844
[ 1.430541] [<c04cc924>] (fb_probe+0x0/0xbc4) from [<c02648e4>] (platform_drv_probe+0x20/0x24)
[ 1.439605] [<c02648c4>] (platform_drv_probe+0x0/0x24) from [<c026342c>] (driver_probe_device+0xa0/0x1b0)
[ 1.449707] [<c026338c>] (driver_probe_device+0x0/0x1b0) from [<c0263618>] (__device_attach+0x44/0x48)
[ 1.459503] r9:c002ff2c r8:c0714d8c r7:00000000 r6:c02635d4 r5:cf9bc608
[ 1.466400] r4:c06d2788
[ 1.469177] [<c02635d4>] (__device_attach+0x0/0x48) from [<c02628d8>] (bus_for_each_drv+0x68/0x94)
[ 1.478607] r5:cf81dc48 r4:cf9bc608
[ 1.482391] [<c0262870>] (bus_for_each_drv+0x0/0x94) from [<c02636e4>] (device_attach+0x9c/0xc0)
[ 1.491638] r7:c06be7f0 r6:00000000 r5:cf9bc63c r4:cf9bc608
[ 1.497650] [<c0263648>] (device_attach+0x0/0xc0) from [<c02626dc>] (bus_probe_device+0x2c/0x48)
[ 1.506896] r7:c06be7f0 r6:00000000 r5:cf9bc610 r4:cf9bc608
[ 1.512878] [<c02626b0>] (bus_probe_device+0x0/0x48) from [<c0261554>] (device_add+0x4c4/0x590)
[ 1.522064] [<c0261090>] (device_add+0x0/0x590) from [<c0264f80>] (platform_device_add+0x100/0x19c)
[ 1.531616] [<c0264e80>] (platform_device_add+0x0/0x19c) from [<c00332dc>] (omap_device_register+0x28/0x2c)
[ 1.541870] r7:c05c6868 r6:00000000 r5:cf9c4e00 r4:cf9bc600
[ 1.547851] [<c00332b4>] (omap_device_register+0x0/0x2c) from [<c00338b4>] (omap_device_build_ss+0x108/0x144)
[ 1.558319] [<c00337ac>] (omap_device_build_ss+0x0/0x144) from [<c0033944>] (omap_device_build+0x54/0x5c)
[ 1.568420] [<c00338f0>] (omap_device_build+0x0/0x5c) from [<c06685a0>] (am33xx_register_lcdc+0x64/0xb0)
[ 1.578399] r4:00000000 [ 1.581085] [<c066853c>] (am33xx_register_lcdc+0x0/0xb0) from [<c002f778>] (lcdc_init+0x30/0x60)
[ 1.590332] r6:00000001 r5:00000001 r4:c06bd128
[ 1.595245] [<c002f748>] (lcdc_init+0x0/0x60) from [<c002f1f8>] (_configure_device+0x70/0xdc)
[ 1.604217] [<c002f188>] (_configure_device+0x0/0xdc) from [<c0030130>] (am335x_evm_setup+0x204/0x4ac)
[ 1.614044] r7:00000000 r6:cf8a0820 r5:00000000 r4:c06bdac0
[ 1.620025] [<c002ff2c>] (am335x_evm_setup+0x0/0x4ac) from [<c0276794>] (at24_probe+0x45c/0x4e4)
[ 1.629272] r6:cf8a0820 r5:cf8a0800 r4:cf9c3d40
[ 1.634185] [<c0276338>] (at24_probe+0x0/0x4e4) from [<c032c66c>] (i2c_device_probe+0xb4/0xec)
[ 1.643249] [<c032c5b8>] (i2c_device_probe+0x0/0xec) from [<c026342c>] (driver_probe_device+0xa0/0x1b0)
[ 1.653137] r7:c06d7558 r6:cf8a0854 r5:c0714db0 r4:cf8a0820 [ 1.659118] [<c026338c>] (driver_probe_device+0x0/0x1b0) from [<c02635d0>] (__driver_attach+0x94/0x98)
[ 1.668945] r9:00000000 r8:00000000 r7:00000000 r6:cf8a0854 r5:c06d7558
[ 1.675842] r4:cf8a0820 [ 1.678588] [<c026353c>] (__driver_attach+0x0/0x98) from [<c0262be0>] (bus_for_each_dev+0x68/0x94)
[ 1.688049] r7:00000000 r6:c026353c r5:cf81dec8 r4:c06d7558
[ 1.694030] [<c0262b78>] (bus_for_each_dev+0x0/0x94) from [<c026327c>] (driver_attach+0x24/0x28)
[ 1.703277] r7:00000000 r6:cf9c3ec0 r5:c06e3db0 r4:c06d7558
[ 1.709259] [<c0263258>] (driver_attach+0x0/0x28) from [<c0262448>] (bus_add_driver+0xa8/0x23c)
[ 1.718444] [<c02623a0>] (bus_add_driver+0x0/0x23c) from [<c0263c34>] (driver_register+0x80/0x144)
[ 1.727905] [<c0263bb4>] (driver_register+0x0/0x144) from [<c032cab0>] (i2c_register_driver+0x34/0xbc)
[ 1.737701] r9:00000000 r8:00000000 r7:00000013 r6:00000000 r5:c06f4180
[ 1.744598] r4:c06d7530
[ 1.747375] [<c032ca7c>] (i2c_register_driver+0x0/0xbc) from [<c067b8f8>] (at24_init+0x48/0x54)
[ 1.756530] r5:c06f4180 r4:c069ab4c
[ 1.760314] [<c067b8b0>] (at24_init+0x0/0x54) from [<c0008610>] (do_one_initcall+0x44/0x1a4)
[ 1.769195] [<c00085cc>] (do_one_initcall+0x0/0x1a4) from [<c0660288>] (kernel_init+0x80/0x124)
[ 1.778381] [<c0660208>] (kernel_init+0x0/0x124) from [<c0040884>] (do_exit+0x0/0x6ac)
[ 1.786712] r5:c0660208 r4:00000000
[ 1.790557] ---[ end trace b4622b5c66012fd7 ]---
[ 1.795440] da8xx_lcdc da8xx_lcdc.0: GLCD: kmalloc for frame buffer failed
[ 1.802703] da8xx_lcdc: probe of da8xx_lcdc.0 failed with error -22
有人知道是什么原因吗？
AM3359 LCD 16bit RGB 24Bit 现已经换成BGR。
我的修改如下：board-am335xevm.c
static const struct display_panel disp_panel = {
WVGA,
16,
24,
COLOR_ACTIVE,
};
static struct lcd_ctrl_config lcd_cfg = {
&disp_panel,
.ac_bias = 255,
.ac_bias_intrpt = 0,
.dma_burst_sz = 16,
.bpp = 24,
.fdd = 0x80,
.tft_alt_mode = 0,
.stn_565_mode = 0,
.mono_8bit_mode = 0,
.invert_line_clock = 1,
.invert_frm_clock = 1,
.sync_edge = 0,
.sync_ctrl = 1,
.raster_order = 0,
};
在am335x_evm_defconfig文件：FB_DA8XX_CONSISTENT_DMA_SIZE 已改为14，还是出现如上错误。
