Add CLK_IGNORE_UNUSED flag to the "fclk_div2" clock to fix boot hang on the Hardkernel's Odroid N2 board (with bootloader booted from SD card and kernel loaded via FTFP).
It looks that this clock is disabled by the generic unused clocks scanning code before it gets enabled by the meson-gx-mmc driver. Signed-off-by: Marek Szyprowski <[email protected]> --- Without this patch the only way to boot OdroidN2 board with mainline kernel is to append clk_ignore_unused kernel parameter. I've build the kernel from the default arm64's defconfig. The kernel is loaded via TFTP using vendor's u-boot. --- drivers/clk/clk.c | 5 +++++ drivers/clk/meson/g12a.c | 1 + 2 files changed, 6 insertions(+) diff --git a/drivers/clk/meson/g12a.c b/drivers/clk/meson/g12a.c index 9803d44bb157..4106b6231be4 100644 --- a/drivers/clk/meson/g12a.c +++ b/drivers/clk/meson/g12a.c @@ -298,6 +298,7 @@ static struct clk_regmap g12a_fclk_div2 = { &g12a_fclk_div2_div.hw }, .num_parents = 1, + .flags = CLK_IGNORE_UNUSED, }, }; -- 2.17.1
