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  1. 09 Apr, 2019 2 commits
    • Tony Lindgren's avatar
      ARM: dts: Add common mcpdm dts file for omap4 · ed01ffd9
      Tony Lindgren authored 
      The mcpdm module found on omap4 and 5 needs pdmclk clock from
the pmic that may or may not be wired. Without this clock we
cannot read the registers for mcpdm at all. For the external
mcpdm clock to work, it needs to be muxed at the module level
for ti-sysc driver probe to mux it early enough for probe.

Let's set up a common file for it to make things a bit easier
to make l4 abe interconnect to probe with ti-sysc driver. Note
that this is not needed for omap5 as we can just update mcpdm
muxing in omap5-board-common.dtsi in later patches.

Cc: devicetree@vger.kernel.org
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      ed01ffd9
    • Roger Quadros's avatar
      bus: ti-sysc: Add generic enable/disable functions · d59b6056
      Roger Quadros authored 
      For non legacy cases, add generic sysc_enable_module()
and sysc_disable_module() functions.
Signed-off-by: default avatarRoger Quadros <rogerq@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      d59b6056
  3. 08 Apr, 2019 17 commits
  5. 05 Apr, 2019 4 commits
  7. 03 Apr, 2019 6 commits
    • Tony Lindgren's avatar
      bus: ti-sysc: Add quirk handling for external optional functional clock · a54275f4
      Tony Lindgren authored 
      We cannot access mcpdm registers at all unless there is an optional pdmclk
configured. As this is currently only needed for mcpdm, let's check for
mcpdm in sysc_get_clocks(). If it turns out to be needed for other modules
too, we can add more flags to the quirks table for this.
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      a54275f4
    • Tony Lindgren's avatar
      bus: ti-sysc: Add support for early quirks based on register address · 42b9c5c9
      Tony Lindgren authored 
      At least mcpdm needs an optional external clock enabled to function and
this clock typically comes from the PMIC. We can detect mcpdm based on
the interconnect target module address and set a quirk flag early.

To do this, let's initialize the clocks a bit later and add a new
function for sysc_init_early_quirks(). Note that we cannot yet enable
the early quirks for mcpdm until the optional external clocks are
handled in the in the following patch.
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      42b9c5c9
    • Tony Lindgren's avatar
      bus: ti-sysc: Move rstctrl reset to happen later · b11c1ea1
      Tony Lindgren authored 
      We can do the rsstctrl a bit later, but need to deassert rstctrl reset
before the clocks are enabled if asserted. Let's only init restctrl
in sysc_init_resets() and do the reset later on just before we enable
the device clocks.
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      b11c1ea1
    • Tony Lindgren's avatar
      bus: ti-sysc: Manage clocks for the interconnect target module in all cases · 93de83a2
      Tony Lindgren authored 
      We are currently not managing interconnect target module clocks in the
for legacy platform data based case. This causes a problem for using the
platform data based functions when dropping the platform data for the
interconnect target module configuration.

To avoid a situation where we need to populate the main and optional
clocks also for the platform data based functions, let's just manage the
clocks directly in ti-sysc driver. This means that until the interconnect
target module confugration platform data is dropped our use count for
clk_enable() will be 2 instead of 1.
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      93de83a2
    • Tony Lindgren's avatar
      bus: ti-sysc: Allocate mdata as needed and do platform data based init later · a3e92e7b
      Tony Lindgren authored 
      The platform data based init functions typically reset the interconnect
target module configure the registers. As we may need the interconnect
target module specific quirks configured based on the revision register,
we want to move the platform data based init to happen later.

Let's allocate mdata as needed so it's available for sysc_legacy_init()
that we call with module clocks enabled from sysc_init_module().
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      a3e92e7b
    • Tony Lindgren's avatar
      bus: ti-sysc: Enable all clocks directly during init to read revision · 1a5cd7c2
      Tony Lindgren authored 
      The first thing we want to do is just read the module revision register to
be able to configure the module specific quirks and configure the module
registers.

As the interconnect target module may not yet be properly configured and
may need a reset first, we don't want to use pm_runtime_get() at this
point.

To read the revision register, let's just enable the all the clocks for
the interconnect target module during init even if the optional clocks
are not needed. That way we can read the revision register to configure
the quirks needed for PM runtime.
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      1a5cd7c2
  9. 01 Apr, 2019 5 commits
  11. 26 Mar, 2019 6 commits
    • Tony Lindgren's avatar
      ARM: OMAP2+: Handle reset quirks for dynamically allocated modules · 8b30919a
      Tony Lindgren authored 
      For dynamically allocated struct omap_hwmod data, we need to populate
the device IP specific reset quirks.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      8b30919a
    • Tony Lindgren's avatar
      ARM: OMAP2+: Remove hwmod .rev data and use local SoC checks instead · 70451127
      Tony Lindgren authored 
      We can just check for omap2 and 3 for i2c and smartreflex locally.
The rest of the .rev data is already unused.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      70451127
    • Tony Lindgren's avatar
      ARM: OMAP2+: Allocate struct omap_hwmod based on dts data · b57250fa
      Tony Lindgren authored 
      With ti-sysc interconnect target module, we can allocate struct omap_hwmod
data based on the devicetree data. This allows dropping the static SoC
specific data eventually so we will only boot with data we actually need.

To allocate struct omap_hwmod dynamically, we need to add a mutex for
modifying the list, and remove __init for few functions.

Note that we are not initialized oh->_clk or the optional clocks and their
related quirks. That can be directly handled by the interconnect target
module driver.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      b57250fa
    • Tony Lindgren's avatar
      ARM: OMAP2+: Define _HWMOD_STATE_DEFAULT and use it · 6d63b12d
      Tony Lindgren authored 
      For dynamically allocated struct hwmod entries probing with ti-sysc
interconnect target module driver, we need to specify the initial default
state the same way as we do for the platform data cases.

Let's prepare for that by adding _HWMOD_STATE_DEFAULT that we can then
use to set the initial default state without a need to add similar
CONFIG_PM handling in multiple places.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      6d63b12d
    • Tony Lindgren's avatar
      ARM: OMAP2+: Prepare class allocation for dynamically allocated modules · 513a4abb
      Tony Lindgren authored 
      For dynamically allocated sysconfig data we only need to allocate a new
class for the cases where the class is shared. For dynamically allocated
struct omap_hwmod we will always allocate a new class.

Let's add detection for when we need to allocate a new class by comparing
the class name against the module name. If they match, there's no need
to allocate a new calls as we don't have case of mixed platform data and
dts data initialized modules for the same class.

Let's also move the init of class data inside the spinlock.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      513a4abb
    • Tony Lindgren's avatar
      ARM: OMAP2+: Make interconnect target module allocation functions static · 798bd175
      Tony Lindgren authored 
      Only omap_hwmod_init_module() gets called, the rest of the interconnect
target module allocation functions can be static.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      798bd175
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