On 4/5/17 11:36 AM, Randy Dunlap wrote:
On 04/04/17 19:06, Christopher Bostic wrote:
From: Chris Bostic <cbostic@xxxxxxxxxxxxxxxxxx>
Add an engine driver to expose a "hub" FSI master - which has a set of
control registers in the engine address space, and uses a chunk of the
slave address space for actual FSI communication.
Additional changes from Jeremy Kerr <jk@xxxxxxxxxx>.
Signed-off-by: Chris Bostic <cbostic@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Jeremy Kerr <jk@xxxxxxxxxx>
Signed-off-by: Joel Stanley <joel@xxxxxxxxx>
---
drivers/fsi/Kconfig | 9 ++
drivers/fsi/Makefile | 1 +
drivers/fsi/fsi-master-hub.c | 327 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 337 insertions(+)
create mode 100644 drivers/fsi/fsi-master-hub.c
diff --git a/drivers/fsi/Kconfig b/drivers/fsi/Kconfig
index 0fa265c..e1156b4 100644
--- a/drivers/fsi/Kconfig
+++ b/drivers/fsi/Kconfig
@@ -18,6 +18,15 @@ config FSI_MASTER_GPIO
---help---
This option enables a FSI master driver using GPIO lines.
+config FSI_MASTER_HUB
+ tristate "FSI hub master"
+ depends on FSI
redundant again.
Will correct.
Thanks,
Chris
+ ---help---
+ This option enables a FSI hub master driver. Hub is a type of FSI
+ master that is connected to the upstream master via a slave. Hubs
+ allow chaining of FSI links to an arbitrary depth. This allows for
+ a high target device fanout.
+
config FSI_SCOM
tristate "SCOM FSI client device driver"
depends on FSI
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