feat(st-clock): manage disabled oscillator
Support "disabled" status for oscillator in device tree.
At boot time, the clock tree initialization performs the following
tasks:
- enabling of the oscillators present in the device tree and not
disabled,
- disabling of the HSI oscillator if the node is absent or disabled
(always activated by bootROM).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Change-Id: I176276022334f3d97ba0250b54062f0ae970e239
diff --git a/drivers/st/clk/stm32mp_clkfunc.c b/drivers/st/clk/stm32mp_clkfunc.c
index c83b8ad..e008bc2 100644
--- a/drivers/st/clk/stm32mp_clkfunc.c
+++ b/drivers/st/clk/stm32mp_clkfunc.c
@@ -1,19 +1,18 @@
/*
- * Copyright (c) 2017-2021, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2017-2022, STMicroelectronics - All Rights Reserved
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <errno.h>
-#include <libfdt.h>
-
-#include <platform_def.h>
-
#include <common/fdt_wrappers.h>
#include <drivers/clk.h>
#include <drivers/st/stm32_gpio.h>
#include <drivers/st/stm32mp_clkfunc.h>
+#include <libfdt.h>
+
+#include <platform_def.h>
#define DT_UART_COMPAT "st,stm32h7-uart"
/*
@@ -45,7 +44,8 @@
return ret;
}
- if (strncmp(cchar, name, (size_t)ret) == 0) {
+ if ((strncmp(cchar, name, (size_t)ret) == 0) &&
+ (fdt_get_status(subnode) != DT_DISABLED)) {
const fdt32_t *cuint;
cuint = fdt_getprop(fdt, subnode, "clock-frequency",