Hi Martin, > Martin Sperl <kernel@xxxxxxxxxxxxxxxx> hat am 13. Februar 2016 um 12:53 > geschrieben: > > > Seems as if you apply it on top of (parts of) my patchset - not on top of a > clean 4.5-rc3. sorry about that. I took the wrong directory. > > Anyway - after some fixing I get the following outputs - > the amba-pl011 driver is still patched with debug messages: > > After boot with aux-uart as tty: > root@raspcm:~# dmesg | grep bcm2835 > [ 0.018172] bcm2835: system timer (irq = 27) > [ 0.711388] bcm2835-aux-uart 20215040.serial: could not get clk: -517 > [ 1.649124] bcm2835-rng 20104000.rng: hwrng registered > [ 2.051190] bcm2835_clock_on: clk still busy from 6 > [ 2.056159] bcm2835_clock_on: clk now busy from 9 I get the same output here. It belongs to mmc clock. > [ 8.062743] bcm2835-wdt 20100000.watchdog: Broadcom BCM2835 watchdog timer > [ 12.042105] bcm2835-i2s 20203000.i2s: can't request region for resource [mem > 0x20101098-0x20101099] > [ 12.191701] bcm2835-i2s: probe of 20203000.i2s failed with error -16 > > Loading the module: > root@raspcm:~# modprobe amba-pl011 > [ 106.685812] Serial: AMBA PL011 UART driver > [ 106.693702] uart-pl011 20201000.uart: pl011_setup_port: f0201000 20201000 > [ 106.702109] 20201000.uart: ttyAMA0 at MMIO 0x20201000 (irq = 81, base_baud = > 0) is a PL011 rev2 > root@raspcm:~# > > and starting getty: > root@raspcm:~# /sbin/getty -a root -L ttyAMA0 115200 vt100 > [ 137.851123] pl011_startup - start > [ 137.854538] pl011_hwinit - prepare-enable > [ 137.858772] bcm2835_clock_on: clk still busy from 6 > [ 137.863755] bcm2835_clock_on: clk now busy from 9 > [ 137.868590] pl011_hwinit - prepare-enable - ret = 0 > [ 137.875249] uart-pl011 20201000.uart: no DMA platform data > [ 137.880940] pl011_startup - exit > [ 137.888840] pl011_shutdown - start > [ 137.892360] pl011_shutdown - disable_unprepare > [ 137.896933] bcm2835_clock_off: clk still busy from 9 > [ 137.902112] pl011_shutdown - exit > [ 137.907233] pl011_startup - start > [ 137.910713] pl011_hwinit - prepare-enable > [ 137.914808] bcm2835_pll_on: PLL still locked from 1 > [ 138.019876] bcm2835-clk 20101000.cprman: plld: couldn't lock PLL > [ 138.026000] pl011_hwinit - prepare-enable - ret = -110 > [ 138.031266] pl011_startup - error = -110 - disable_unprepare > [ 138.037048] ------------[ cut here ]------------ > [ 138.041777] WARNING: CPU: 0 PID: 2377 at drivers/clk/clk.c:680 > clk_core_disable+0x34/0xf0() > [ 138.051063] ---[ end trace dd2f225b2af4c32c ]--- > [ 138.055859] ------------[ cut here ]------------ > [ 138.060627] WARNING: CPU: 0 PID: 2377 at drivers/clk/clk.c:575 > clk_core_unprepare+0x34/0x110() > [ 138.070321] ---[ end trace dd2f225b2af4c32d ]--- > > No HDMI output - this time no “flashing” - just no signal. > Machine is crashed - the attached AXIS USB network card (0b95:772b) > just transmits identical packets on the network without stopping… > According to the datasheet busy bit shouldn't be set while changing the clock. So this isn't good. I hope this could be fixed, too. Regards > -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
