# git rev-parse -q --verify 6aa254f8d119df235963fd718d145317512963ac^{commit} 6aa254f8d119df235963fd718d145317512963ac already have revision, skipping fetch # git checkout -q -f -B kisskb 6aa254f8d119df235963fd718d145317512963ac # git clean -qxdf # < git log -1 # commit 6aa254f8d119df235963fd718d145317512963ac # Author: Cédric Le Goater # Date: Fri Oct 4 13:24:36 2019 +0200 # # mtd: spi-nor: aspeed: Add read training support for the AST2600 # # The read training algorithm consists of finding the appropriate read # timing delays for the HCLK dividers in range [ 2 - 5 ] and store the # results in the Read Timing Compensation register. The previous AST2500 # and AST2400 SoCs were covering a broader HCLK range [ 1 - 5 ] because # the AHB frequency was lower. # # The algorithm first reads a golden buffer at low speed and then # performs reads with different clocks and delay cycle settings to find # a breaking point. This selects the default clock frequency for the CEx # control register. The current settings are bit optimistic as we pick # the first delay giving good results. A safer approach would be to # determine an interval and choose the middle value. We might change the # approach depending on the results on other systems. # # Signed-off-by: Cédric Le Goater # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-ld --version # < git log --format=%s --max-count=1 6aa254f8d119df235963fd718d145317512963ac # < make -s -j 48 ARCH=arm O=/kisskb/build/cdrx_cm_x2xx_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi- cm_x2xx_defconfig # make -s -j 48 ARCH=arm O=/kisskb/build/cdrx_cm_x2xx_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi- WARNING: "return_address" [vmlinux] is a static EXPORT_SYMBOL_GPL WARNING: "return_address" [vmlinux] is a static EXPORT_SYMBOL_GPL Completed OK # rm -rf /kisskb/build/cdrx_cm_x2xx_defconfig_arm-gcc4.9 # Build took: 0:00:48.408021