> NXP used to setup the gpmi clock root from gpmi_clk in early versions > in their downstream BSP. [1] > However on mainline the gpmi clock root was always setup from enfc > since the beginning of the i.MX 6 series SoCs, which is still the same > today. [2] > NXP followed the mainline approach at some point and changed > setup_gpmi_io_clk to setup gpmi clock root from enfc which left faulty > code behind in our board file. [3] > This commit follows the change of NXP as it improves the performance of > the NAND from ~1.2 MiB/s to ~12 MiB/s. [3] > This change was verified to work in recovery-mode and u-boot loaded > from NAND on all four Colibri iMX6ULL SKUs from Toradex. > The frequency used to read the NAND, measured on RE# (Read Enable): > before this patch: 1.4 MHz > after this patch: 22 MHz > in Linux Kernel: 50 MHz > [1] > https://source.codeaurora.org/external/imx/uboot-imx/tree/arch/arm/cpu/armv7/mx6/clock.c?h=nxp/imx_v2016.03_4.1.15_2.0.0_ga#n62 > [2] commit 23608e23fd65 ("i.mx: add the initial support for freescale i.MX6Q > processor") > [3] > https://source.codeaurora.org/external/imx/uboot-imx/commit/?id=7a82a19ceabfb04bbc1591a67c99751748781c7d > Signed-off-by: Philippe Schenker <philippe.schen...@toradex.com> Applied to u-boot-imx, master, thanks !
Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sba...@denx.de =====================================================================
