linux/drivers/clk/bcm
Nicolas Saenz Julienne 0c51d8f5c8 clk: bcm2835: Do not use prediv with bcm2711's PLLs
[ Upstream commit f34e4651ce ]

Contrary to previous SoCs, bcm2711 doesn't have a prescaler in the PLL
feedback loop. Bypass it by zeroing fb_prediv_mask when running on
bcm2711.

Note that, since the prediv configuration bits were re-purposed, this
was triggering miscalculations on all clocks hanging from the VPU clock,
notably the aux UART, making its output unintelligible.

Fixes: 42de9ad400 ("clk: bcm2835: Add BCM2711_CLOCK_EMMC2 support")
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20200730182619.23246-1-nsaenzjulienne@suse.de
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-08-21 13:05:35 +02:00
..
Kconfig
Makefile
clk-bcm63xx-gate.c
clk-bcm63xx.c
clk-bcm281xx.c
clk-bcm2835-aux.c
clk-bcm2835.c clk: bcm2835: Do not use prediv with bcm2711's PLLs 2020-08-21 13:05:35 +02:00
clk-bcm21664.c
clk-bcm53573-ilp.c
clk-cygnus.c
clk-hr2.c
clk-iproc-armpll.c
clk-iproc-asiu.c
clk-iproc-pll.c
clk-iproc.h
clk-kona-setup.c
clk-kona.c
clk-kona.h
clk-ns2.c
clk-nsp.c
clk-raspberrypi.c
clk-sr.c