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watchdog: sp805_wdt: add arm cmsdk apb wdt support

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Support arm CMSDK ip apb watchdog device.
Description details of this device can be found in the
document DDI0479D_m_class_processor_system_r1p1_trm.pdf
on the arm's document web. Which periphid is 0x001bb824.
The registers are basically the same as the 805, just a
few more: Periphid4/5/6/7 with offset 0xFD0/0xFD4/0xFD8/0xFDC.
For the register description of arm,sp805, please refer
to the document DDI0270-arm-sp805.pdf.

Signed-off-by: Bing Fan <tombinfan@tencent.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1656037482-19505-1-git-send-email-hptsfb@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Bing Fan 2022-06-24 10:24:42 +08:00 committed by Wim Van Sebroeck
parent c6d9c0798e
commit 3b1905456a
1 changed files with 5 additions and 0 deletions
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5
drivers/watchdog/sp805_wdt.c
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* drivers/char/watchdog/sp805-wdt.c
*
@ -341,6 +342,10 @@ static const struct amba_id sp805_wdt_ids[] = {
.id = 0x00141805,
.mask = 0x00ffffff,
},
{
.id = 0x001bb824,
.mask = 0x00ffffff,
},
{ 0, 0 },
};