can: c_can: Add support for TI DRA7 DCAN

DRA7 SoC has 2 CAN IPs. Provide compatible IDs and RAMINIT
register data for both.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/Documentation/devicetree/bindings/net/can/c_can.txt b/Documentation/devicetree/bindings/net/can/c_can.txt
index a3ca3ee..f682fdb 100644 (file)
--- a/Documentation/devicetree/bindings/net/can/c_can.txt
+++ b/Documentation/devicetree/bindings/net/can/c_can.txt
@@ -4,6 +4,7 @@ Bosch C_CAN/D_CAN controller Device Tree Bindings
 Required properties:
 - compatible           : Should be "bosch,c_can" for C_CAN controllers and
                          "bosch,d_can" for D_CAN controllers.
+                         Can be "ti,dra7-d_can".
 - reg                  : physical base address and size of the C_CAN/D_CAN
                          registers map
 - interrupts           : property with a value describing the interrupt

diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c
index 41fa460..570da5f 100644 (file)
--- a/drivers/net/can/c_can/c_can_platform.c
+++ b/drivers/net/can/c_can/c_can_platform.c
@@ -190,6 +190,18 @@ static const struct c_can_driver_data d_can_drvdata = {
        .id = BOSCH_D_CAN,
 };
 
+static const struct raminit_bits dra7_raminit_bits[] = {
+       [0] = { .start = 3, .done = 1, },
+       [1] = { .start = 5, .done = 2, },
+};
+
+static const struct c_can_driver_data dra7_dcan_drvdata = {
+       .id = BOSCH_D_CAN,
+       .raminit_num = ARRAY_SIZE(dra7_raminit_bits),
+       .raminit_bits = dra7_raminit_bits,
+       .raminit_pulse = true,
+};
+
 static struct platform_device_id c_can_id_table[] = {
        {
                .name = KBUILD_MODNAME,
@@ -210,6 +222,7 @@ MODULE_DEVICE_TABLE(platform, c_can_id_table);
 static const struct of_device_id c_can_of_table[] = {
        { .compatible = "bosch,c_can", .data = &c_can_drvdata },
        { .compatible = "bosch,d_can", .data = &d_can_drvdata },
+       { .compatible = "ti,dra7-d_can", .data = &dra7_dcan_drvdata },
        { /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, c_can_of_table);