Messages in this thread | | | Subject | Re: [PATCH v3 6/6] tty/serial: atmel: changed the driver to work under at91-usart mfd | From | Radu Pirea <> | Date | Fri, 25 May 2018 17:07:56 +0300 |
| |
On 05/25/2018 04:35 PM, Richard Genoud wrote: > 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 I reproduced your issue. If in cmdline console is not set like this "console=ttyS0,115200", the console goes to the lcd. > ( 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 >>> >
| |