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ARM: imx: imx7ulp: Add a comment explaining the B2 silicon version

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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>
This commit is contained in:
Fabio Estevam
2020-11-03 19:04:54 -03:00
committed by Shawn Guo
parent 2f4ac2d79e
commit 7544bfc086
1 changed files with 1 additions and 0 deletions
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arch/arm/mach-imx/mach-imx7ulp.c
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@@ -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: