build/patch/kernel/archive/rockchip64-6.0/general-possibility-of-disabling-rk808-rtc.patch

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From 2fbbbde230c0c488412f2a376b13adbcbcbae28b Mon Sep 17 00:00:00 2001
From: Piotr Szczepanik <piter75@gmail.com>
Date: Sun, 24 Jan 2021 16:14:06 +0100
Subject: [PATCH] add possibility of disabling rk808-rtc
To disable rk808-rtc driver from loading for specific board
add the following stanza to rk808 node in device tree:
rtc {
compatible = "rk808-rtc";
status = "disabled";
}
This is needed for roc-rk3399-pc plus (a.k.a. Station P1).
Without the change rk808's rtc is initialised and used for time keeping
although there is another rtc (hym8563) that should be actually used.
Signed-off-by: Piotr Szczepanik <piter75@gmail.com>
---
drivers/mfd/mfd-core.c | 2 +-
drivers/mfd/rk808.c | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index fc00aaccb..5c13cc9e2 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -225,7 +225,7 @@ static int mfd_add_device(struct device *parent, int id,
}
if (!pdev->dev.of_node)
- pr_warn("%s: Failed to locate of_node [id: %d]\n",
+ pr_debug("%s: Failed to locate of_node [id: %d]\n",
cell->name, platform_id);
}
diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c
index d109b9f14..d90c45cd5 100644
--- a/drivers/mfd/rk808.c
+++ b/drivers/mfd/rk808.c
@@ -145,6 +145,7 @@ static const struct mfd_cell rk808s[] = {
{ .name = "rk808-regulator", },
{
.name = "rk808-rtc",
+ .of_compatible = "rk808-rtc",
.num_resources = ARRAY_SIZE(rtc_resources),
.resources = rtc_resources,
},
--
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