On 25/05/2018 14:17, Radu Pirea wrote: > > > On 05/15/2018 04:14 PM, Richard Genoud wrote: >> On 15/05/2018 14:47, Radu Pirea wrote: >>> On Mon, 2018-05-14 at 12:57 +0200, Richard Genoud wrote: >>>> After your patch, the DMA is not selected anymore: >>>> atmel_usart_serial atmel_usart_serial.0.auto: TX channel not >>>> available, switch to pio >>>> instead of: >>>> atmel_usart fffff200.serial: using dma1chan2 for tx DMA transfers >>>> >>> Fixed. >>>> And the kernel doesn't log anymore on the serial console, despite the >>>> loglevel=8 >>>> (after reverting this series, the kernel logs reappears on the serial >>>> console) >>>> >>> Which serial are you using as console? >> fffff200.serial (sam9g35-cm) >> ( stdout-path = "serial0:115200n8"; in the DTS ) >> >> With this series applied, all the kernel log goes on the screen. >> Without, it goes on the serial debug. >> > I tested again with archlinux arm and poky-linux4sam release as distros > and kernel log goes on the serial debug. Can you give me more details > like cmdline? I used kernel 4.17-rc6 at91_dt_defconfig at91sam9g35ek.dtb Kernel command line: root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs ( the one from the DTS ) Detailed instructions: git checkout v4.17-rc6 ARCH=arm CROSS_COMPILE=path_to_my_Xchain/arm-linux- LOADADDR=0x20008000 make -j 12 at91_dt_defconfig ARCH=arm CROSS_COMPILE=path_to_my_Xchain/arm-linux- LOADADDR=0x20008000 make -j 12 uImage at91sam9g35ek.dtb cp arch/arm/boot/uImage arch/arm/boot/dts/at91sam9g35ek.dtb /tftpboot/ >From uboot: tftpboot 0x20007FC0 uImage tftpboot 0x26400000 at91sam9g35ek.dtb bootm 0x20007FC0 - 0x26400000 [ I see the logs on the serial debug ] git am \[PATCH\ v3\ [1-6]* ARCH=arm CROSS_COMPILE=path_to_my_Xchain/arm-linux- LOADADDR=0x20008000 make -j 12 uImage at91sam9g35ek.dtb cp arch/arm/boot/uImage arch/arm/boot/dts/at91sam9g35ek.dtb /tftpboot/ >From uboot: tftpboot 0x20007FC0 uImage tftpboot 0x26400000 at91sam9g35ek.dtb bootm 0x20007FC0 - 0x26400000 [ I don't see the logs on the serial debug anymore ] >>>> (tests done on sam9g35) >>>> >>> I will consider the rest of suggestions. >>>> regards, >>>> Richard >> -- 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
