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drivers: rtc_sam: update to support Microchip sama7g54 RTC #91332

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Merged
merged 4 commits into from
Jun 26, 2025
Merged

drivers: rtc_sam: update to support Microchip sama7g54 RTC #91332

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d4bccfb
west.yml: Update west.yml for sama7g54 hal
TonyHan11 Jun 10, 2025
9832348
drivers: rtc: sam: update for supporting RTC of sama7g5 devices
TonyHan11 Apr 8, 2025
f30b96b
dts: microchip: sam: add RTC node for sama7g5.dtsi
TonyHan11 Apr 9, 2025
2ae18a5
tests: drivers: rtc: sam: enable tests for sama7g54_ek
TonyHan11 Apr 23, 2025
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8 changes: 8 additions & 0 deletions drivers/rtc/rtc_sam.c
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Original file line number Diff line number Diff line change
Expand Up @@ -56,12 +56,16 @@ struct rtc_sam_data {

static void rtc_sam_disable_wp(void)
{
#ifdef REG_RTC_WPMR
REG_RTC_WPMR = RTC_SAM_WPMR_DISABLE;
#endif
}

static void rtc_sam_enable_wp(void)
{
#ifdef REG_RTC_WPMR
REG_RTC_WPMR = RTC_SAM_WPMR_ENABLE;
#endif
}

static uint32_t rtc_sam_timr_from_tm(const struct rtc_time *timeptr)
Expand Down Expand Up @@ -642,7 +646,11 @@ static int rtc_sam_init(const struct device *dev)
Rtc *regs = config->regs;

rtc_sam_disable_wp();
#ifdef RTC_MR_PERSIAN
regs->RTC_MR &= ~(RTC_MR_HRMOD | RTC_MR_PERSIAN);
#else
regs->RTC_MR &= ~RTC_MR_HRMOD;
#endif
regs->RTC_CR = 0;
rtc_sam_enable_wp();
regs->RTC_IDR = (RTC_IDR_ACKDIS
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8 changes: 8 additions & 0 deletions dts/arm/microchip/sam/sama7g5.dtsi
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Expand Up @@ -70,6 +70,14 @@
#interrupt-cells = <4>;
};

rtc: rtc@e001d0a8 {
compatible = "atmel,sam-rtc";
reg = <0xe001d0a8 0x30>;
interrupt-parent = <&gic>;
interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL IRQ_DEFAULT_PRIORITY>;
clocks = <&clk32k 1>;
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Is this fixed or user should select it ?

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The RTC clock is from the slow clock. Details in datasheet
image

};

sram: memory@100000 {
compatible = "mmio-sram";
reg = <0x00100000 DT_SIZE_K(128)>;
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3 changes: 3 additions & 0 deletions tests/drivers/rtc/rtc_api/boards/sama7g54_ek.conf
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@@ -0,0 +1,3 @@
CONFIG_RTC_ALARM=y
CONFIG_RTC_UPDATE=y
CONFIG_RTC_CALIBRATION=y
11 changes: 11 additions & 0 deletions tests/drivers/rtc/rtc_api/boards/sama7g54_ek.overlay
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@@ -0,0 +1,11 @@
/*
* Copyright (C) 2025 Microchip Technology Inc. and its subsidiaries
*
* SPDX-License-Identifier: Apache-2.0
*/

/ {
aliases {
rtc = &rtc;
};
};
2 changes: 1 addition & 1 deletion west.yml
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Expand Up @@ -195,7 +195,7 @@ manifest:
groups:
- hal
- name: hal_microchip
revision: 4b74f4081342423badcf758278bbc0582ca8735d
revision: 32a79d481c056b2204a5701d5a5799f9e5130dd7
path: modules/hal/microchip
groups:
- hal
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