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![]() Turns out latest upstream U-Boot does not configure/enable pll_u which leaves it at some default rate of 500 kHz: root@apalis-t30:~# cat /sys/kernel/debug/clk/clk_summary | grep pll_u pll_u 3 3 0 500000 0 Of course this won't quite work leading to the following messages: [ 6.559593] usb 2-1: new full-speed USB device number 2 using tegra- ehci [ 11.759173] usb 2-1: device descriptor read/64, error -110 [ 27.119453] usb 2-1: device descriptor read/64, error -110 [ 27.389217] usb 2-1: new full-speed USB device number 3 using tegra- ehci [ 32.559454] usb 2-1: device descriptor read/64, error -110 [ 47.929777] usb 2-1: device descriptor read/64, error -110 [ 48.049658] usb usb2-port1: attempt power cycle [ 48.759475] usb 2-1: new full-speed USB device number 4 using tegra- ehci [ 59.349457] usb 2-1: device not accepting address 4, error -110 [ 59.509449] usb 2-1: new full-speed USB device number 5 using tegra- ehci [ 70.069457] usb 2-1: device not accepting address 5, error -110 [ 70.079721] usb usb2-port1: unable to enumerate USB device Fix this by actually allowing the rate also being set from within the Linux kernel. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> |
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.. | ||
clk-audio-sync.c | ||
clk-bpmp.c | ||
clk-dfll.c | ||
clk-dfll.h | ||
clk-divider.c | ||
clk-emc.c | ||
clk-id.h | ||
clk-periph-fixed.c | ||
clk-periph-gate.c | ||
clk-periph.c | ||
clk-pll-out.c | ||
clk-pll.c | ||
clk-super.c | ||
clk-tegra-audio.c | ||
clk-tegra-fixed.c | ||
clk-tegra-periph.c | ||
clk-tegra-pmc.c | ||
clk-tegra-super-gen4.c | ||
clk-tegra20.c | ||
clk-tegra30.c | ||
clk-tegra114.c | ||
clk-tegra124-dfll-fcpu.c | ||
clk-tegra124.c | ||
clk-tegra210.c | ||
clk.c | ||
clk.h | ||
cvb.c | ||
cvb.h | ||
Kconfig | ||
Makefile |