ti-sysc interconnect target module driver changes for v5.3
This series of changes improves probing devices with ti-sysc to the
point where we can now probe most devices without the custom dts
property "ti,hwmods" and no legacy platform data :)
We add support for platform data callbacks for idling and unidling the
clockdomain the module belongs to. The rest of the series mostly adds
handling for the various quirks needed by old legacy modules such as
i2c and watchdog. Some quirk handling is still missing for few modules,
but those will be added as they get tested.
The related platform data and dts changes will be sent separately.
* tag 'omap-for-v5.3/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
bus: ti-sysc: Add support for module specific reset quirks
bus: ti-sysc: Detect uarts also on omap34xx
bus: ti-sysc: Do rstctrl reset handling in two phases
bus: ti-sysc: Add support for disabling module without legacy mode
bus: ti-sysc: Set ENAWAKEUP if available
bus: ti-sysc: Handle swsup idle mode quirks
bus: ti-sysc: Handle clockactivity for enable and disable
bus: ti-sysc: Enable interconnect target module autoidle bit on enable
bus: ti-sysc: Allow QUIRK_LEGACY_IDLE even if legacy_mode is not set
bus: ti-sysc: Make OCP reset work for sysstatus and sysconfig reset bits
bus: ti-sysc: Support 16-bit writes too
bus: ti-sysc: Add support for missing clockdomain handling
ARM: dts: dra71x: Disable usb4_tm target module
ARM: dts: dra71x: Disable rtc target module
ARM: dts: dra76x: Disable usb4_tm target module
ARM: dts: dra76x: Disable rtc target module
ARM: dts: dra76x: Update MMC2_HS200_MANUAL1 iodelay values
ARM: dts: am57xx-idk: Remove support for voltage switching for SD card
bus: ti-sysc: Handle devices with no control registers
ARM: dts: Configure osc clock for d_can on am335x
Signed-off-by: Olof Johansson <olof@lixom.net>
Some older interconnect target modules need module internal clock
toggling quirks to reset properly. We've been doing this in the
platform code earlier, but need to be able to it directly in the
ti-sysc driver when we no longer rely on on the platform code.
Let's add reset handling for 1-wire, i2c and watchdog. Later on
we can add more modules like msdi and dss as they get tested.
For dra7 pcie, we should be able to just use the rstctrl reset
driver when available.
Signed-off-by: Tony Lindgren <tony@atomide.com>
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We've had minimal OCP softreset support in ti-sysc interconnect target
module driver only used for MCAN driver so far. But it turns out that
MCAN has the sysstatus register resetdone bit inverted compared to most
other modules.
Let's make OCP softreset work for other typical cases with reset status
in sysstatus or sysconfig register so we can use the new functions for
sysc_enable_module() and sysc_disable_module() without "ti,hwmods"
property in the following patches.
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
We need to let ti-sysc driver manage clockdomain autoidle for the
duration of of reset, enable and idle. And we need to do it before we
enable the clock and after we disable it. Currently we are still
relying on platform callbacks indirectly managing clockdomain autoidle.
But I noticed that for device tree only probed drivers it now happens
only after we enabling the clocks and before we disable the clocks,
while it should be the other way around. So far I have not noticed
any issues with this though.
Let's add new ti_sysc_clkdm_deny_idle() and ti_sysc_clkdm_allow_idle()
functions for ti-sysc driver to use to manage clockdomains directly via
platform data callbacks. Note that we can implement the clockdomain
functions in pdata-quirks.c as for probing devices without "ti,hwmods"
custom property we don't need to use the other platform data callbacks.
Let's do this in one patch as there's is still an unlikely chance we
may need to apply this as a fix for v5.2 for dropping legacy platform
data for some devices. We also do have the option of adding back the
platform data if needed in case of trouble.
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
