Hi,
This series add the BCM2835 cprman clock manager peripheral to the
Raspberry Pi machine.
Patches 1-3 are preliminary changes, patches 4-12 are the actual
implementation.
The two last patches add a clock input to the PL011 and
connect it to the cprman and are RFC.
This series has been tested with Linux 5.4.61 (the current raspios
version). It fixes the kernel Oops at boot time due to invalid UART
clock value, and other warnings/errors here and there because of bad
clocks or lack of cprman.
Here is the clock tree as seen by Linux when booted in QEMU:
(/sys/kernel/debug/clk/clk_summary with some columns removed)
enable prepare
clock count count rate
-----------------------------------------------------
otg 0 0 480000000
osc 5 5 19200000
gp2 1 1 32768
tsens 0 0 1920000
otp 0 0 4800000
timer 0 0 1000002
pllh 4 4 864000000
pllh_pix_prediv 1 1 3375000
pllh_pix 0 0 337500
pllh_aux 1 1 216000000
vec 0 0 108000000
pllh_rcal_prediv 1 1 3375000
pllh_rcal 0 0 337500
plld 3 3 2000000024
plld_dsi1 0 0 7812501
plld_dsi0 0 0 7812501
plld_per 3 3 500000006
gp1 1 1 25000000
uart 1 2 47999625
plld_core 2 2 500000006
sdram 0 0 166666668
pllc 3 3 2400000000
pllc_per 1 1 1200000000
emmc 0 0 200000000
pllc_core2 0 0 9375000
pllc_core1 0 0 9375000
pllc_core0 2 2 1200000000
vpu 1 1 700000000
aux_spi2 0 0 700000000
aux_spi1 0 0 700000000
aux_uart 0 0 700000000
peri_image 0 0 700000000
plla 2 2 2250000000
plla_ccp2 0 0 8789063
plla_dsi0 0 0 8789063
plla_core 1 1 750000000
h264 0 0 250000000
isp 0 0 250000000
dsi1p 0 0 0
dsi0p 0 0 0
dsi1e 0 0 0
dsi0e 0 0 0
cam1 0 0 0
cam0 0 0 0
dpi 0 0 0
tec 0 0 0
smi 0 0 0
slim 0 0 0
gp0 0 0 0
dft 0 0 0
aveo 0 0 0
pcm 0 0 0
pwm 0 0 0
hsm 0 0 0
It shows small differences with real hardware due other missing
peripherals for which the driver turn the clock off (like tsens).
Luc Michel (14):
hw/core/clock: provide the VMSTATE_ARRAY_CLOCK macro
hw/core/clock: trace clock values in Hz instead of ns
hw/arm/raspi: fix cprman base address
hw/arm/raspi: add a skeleton implementation of the cprman
hw/misc/bcm2835_cprman: add a PLL skeleton implementation
hw/misc/bcm2835_cprman: implement PLLs behaviour
hw/misc/bcm2835_cprman: add a PLL channel skeleton implementation
hw/misc/bcm2835_cprman: implement PLL channels behaviour
hw/misc/bcm2835_cprman: add a clock mux skeleton implementation
hw/misc/bcm2835_cprman: implement clock mux behaviour
hw/misc/bcm2835_cprman: add the DSI0HSCK multiplexer
hw/misc/bcm2835_cprman: add sane reset values to the registers
hw/char/pl011: add a clock input
hw/arm/bcm2835_peripherals: connect the UART clock
include/hw/arm/bcm2835_peripherals.h | 5 +-
include/hw/arm/raspi_platform.h | 5 +-
include/hw/char/pl011.h | 1 +
include/hw/clock.h | 5 +
include/hw/misc/bcm2835_cprman.h | 209 ++++
include/hw/misc/bcm2835_cprman_internals.h | 1018 ++++++++++++++++++++
hw/arm/bcm2835_peripherals.c | 15 +-
hw/char/pl011.c | 45 +
hw/core/clock.c | 6 +-
hw/misc/bcm2835_cprman.c | 810 ++++++++++++++++
hw/char/trace-events | 1 +
hw/core/trace-events | 4 +-
hw/misc/meson.build | 1 +
hw/misc/trace-events | 5 +
14 files changed, 2118 insertions(+), 12 deletions(-)
create mode 100644 include/hw/misc/bcm2835_cprman.h
create mode 100644 include/hw/misc/bcm2835_cprman_internals.h
create mode 100644 hw/misc/bcm2835_cprman.c
--
2.28.0
