can: grcan: Add device driver for GRCAN and GRHCAN cores

This driver supports GRCAN and CRHCAN CAN controllers available in the GRLIB
VHDL IP core library.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

1 files changed, 18 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 9776f068306b..3da4f9670d8b 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -905,6 +905,24 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
         gpt             [EFI] Forces disk with valid GPT signature but
                         invalid Protective MBR to be treated as GPT.
 
+        grcan.enable0=  [HW] Configuration of physical interface 0. Determines
+                        the "Enable 0" bit of the configuration register.
+                        Format: 0 | 1
+                        Default: 0
+        grcan.enable1=  [HW] Configuration of physical interface 1. Determines
+                        the "Enable 0" bit of the configuration register.
+                        Format: 0 | 1
+                        Default: 0
+        grcan.select=   [HW] Select which physical interface to use.
+                        Format: 0 | 1
+                        Default: 0
+        grcan.txsize=   [HW] Sets the size of the tx buffer.
+                        Format: <unsigned int> such that (txsize & ~0x1fffc0) == 0.
+                        Default: 1024
+        grcan.rxsize=   [HW] Sets the size of the rx buffer.
+                        Format: <unsigned int> such that (rxsize & ~0x1fffc0) == 0.
+                        Default: 1024
+
         hashdist=       [KNL,NUMA] Large hashes allocated during boot
                         are distributed across NUMA nodes.  Defaults on
                         for 64-bit NUMA, off otherwise.