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authorFabio Estevam <festevam@gmail.com>2020-11-03 19:04:54 -0300
committerShawn Guo <shawnguo@kernel.org>2020-11-10 09:56:01 +0800
commit7544bfc0866f56326e47f8ec8b3f68c6db496125 (patch)
tree8ac097c63b36c6268529150d0914d3d446755d27 /arch/arm/mach-imx
parent2f4ac2d79eb4c09ee6dbda1d2fc2616f281094f9 (diff)
downloadlinux-7544bfc0866f56326e47f8ec8b3f68c6db496125.tar.bz2
ARM: imx: imx7ulp: Add a comment explaining the B2 silicon version
To help the users to understand the meaning of bits 31-28 of the JTAG_ID_REG register, add a comment explaining the value that is expected from a i.MX7ULP rev B2. Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/mach-imx')
-rw-r--r--arch/arm/mach-imx/mach-imx7ulp.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx7ulp.c b/arch/arm/mach-imx/mach-imx7ulp.c
index f6032ea7de8b..a3c8dadec1c5 100644
--- a/arch/arm/mach-imx/mach-imx7ulp.c
+++ b/arch/arm/mach-imx/mach-imx7ulp.c
@@ -37,6 +37,7 @@ static void __init imx7ulp_set_revision(void)
* bit[31:28] of JTAG_ID register defines revision as below from B0:
* 0001 B0
* 0010 B1
+ * 0011 B2
*/
switch (revision >> 28) {
case 1: