Re: [PATCH 2/2] spi: imx: dynamic burst length adjust for DMA mode

Hi Jiada, [auto build test ERROR on next-20170207] url: https://github.com/0day-ci/linux/commits/Jiada-Wang/improve-imx-spi-performance/20170208-142524 config: arm-arm5 (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget

Re: [PATCH 2/2] spi: imx: dynamic burst length adjust for DMA mode

Hi Jiada, [auto build test ERROR on next-20170207] url: https://github.com/0day-ci/linux/commits/Jiada-Wang/improve-imx-spi-performance/20170208-142524 config: arm-arm5 (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget

Re: [PATCH 2/2] spi: imx: dynamic burst length adjust for DMA mode

Hi Jiada, [auto build test ERROR on next-20170207] url: https://github.com/0day-ci/linux/commits/Jiada-Wang/improve-imx-spi-performance/20170208-142524 config: i386-allmodconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached

Re: [PATCH 2/2] spi: imx: dynamic burst length adjust for DMA mode

Hi Jiada, [auto build test ERROR on next-20170207] url: https://github.com/0day-ci/linux/commits/Jiada-Wang/improve-imx-spi-performance/20170208-142524 config: i386-allmodconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached

[PATCH 2/2] spi: imx: dynamic burst length adjust for DMA mode

previously burst length (BURST_LENGTH) is always set to equal to bits_per_word, causes a 10us gap between each word in transfer, which significantly affects performance. This patch uses 32 bits transfer to simulate lower bits transfer, and adjusts burst length to reduce the number of gaps in DMA

[PATCH 2/2] spi: imx: dynamic burst length adjust for DMA mode

previously burst length (BURST_LENGTH) is always set to equal to bits_per_word, causes a 10us gap between each word in transfer, which significantly affects performance. This patch uses 32 bits transfer to simulate lower bits transfer, and adjusts burst length to reduce the number of gaps in DMA