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The System Controller Firmware (SCFW) controls RTC, thermal
and WDOG etc., these resources' interrupt function are managed
by SCU. When any IRQ pending, SCU will notify Linux via MU general
interrupt channel #3, and Linux kernel needs to call SCU APIs
to get IRQ status and notify each module to handle the interrupt.
Since there is no data transmission for SCU IRQ notification, so
doorbell mode is used for this MU channel, and SCU driver will
use notifier mechanism to broadcast to every module which registers
the SCU block notifier.
Signed-off-by: Anson Huang <[email protected]>
Reviewed-by: Dong Aisheng <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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This is done via RPC call to SCU.
Signed-off-by: Daniel Baluta <[email protected]>
Reviewed-by: Dong Aisheng <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Add SCU PM SVC related protocol definitions which will be used by
a number of PM functions like Power Domain, Clock, Reset and etc.
The detailed implementation of each function will put in the individual
function drivers.
Cc: Shawn Guo <[email protected]>
Cc: Sascha Hauer <[email protected]>
Reviewed-by: Ulf Hansson <[email protected]>
Signed-off-by: Dong Aisheng <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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We already export resource id in dt-bindings headfile which can also
be used by drivers. So no need keep the same definitions in regular
headfile anymore.
Cc: Shawn Guo <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: Fabio Estevam <[email protected]>
Reviewed-by: Ulf Hansson <[email protected]>
Signed-off-by: Dong Aisheng <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Add SCU MISC SVC support which provides misc control get/set functions.
Cc: Shawn Guo <[email protected]>
Reviewed-by: Sascha Hauer <[email protected]>
Signed-off-by: Dong Aisheng <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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The System Controller Firmware (SCFW) is a low-level system function
which runs on a dedicated Cortex-M core to provide power, clock, and
resource management. It exists on some i.MX8 processors. e.g. i.MX8QM
(QM, QP), and i.MX8QX (QXP, DX).
This patch implements the SCU firmware IPC function and the common
message sending API sc_call_rpc.
Cc: Shawn Guo <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Jassi Brar <[email protected]>
Reviewed-by: Sascha Hauer <[email protected]>
Signed-off-by: Dong Aisheng <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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