From: Gaurav Sharma <gaurav.sharma_7@nxp.com>
Date: Tue, 21 Apr 2026 06:52:16 +0000 (+0530)
Subject: hw/arm/fsl-imx8mm: Implemented support for SNVS
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0dade2f267ec222be9be8ea59964a91f30605cac;p=thirdparty%2Fqemu.git

hw/arm/fsl-imx8mm: Implemented support for SNVS

SNVS contains an RTC which allows Linux to deal correctly with time

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Bernhard Beschow <shentey@gmail.com>
Signed-off-by: Gaurav Sharma <gaurav.sharma_7@nxp.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---

diff --git a/hw/arm/fsl-imx8mm.c b/hw/arm/fsl-imx8mm.c
index 053434412c6..8999bc701e6 100644
--- a/hw/arm/fsl-imx8mm.c
+++ b/hw/arm/fsl-imx8mm.c
@@ -173,6 +173,8 @@ static void fsl_imx8mm_init(Object *obj)
 
     object_initialize_child(obj, "analog", &s->analog, TYPE_IMX8MP_ANALOG);
 
+    object_initialize_child(obj, "snvs", &s->snvs, TYPE_IMX7_SNVS);
+
     for (i = 0; i < FSL_IMX8MM_NUM_UARTS; i++) {
         g_autofree char *name = g_strdup_printf("uart%d", i + 1);
         object_initialize_child(obj, name, &s->uart[i], TYPE_IMX_SERIAL);
@@ -355,6 +357,13 @@ static void fsl_imx8mm_realize(DeviceState *dev, Error **errp)
                                 fsl_imx8mm_memmap[FSL_IMX8MM_OCRAM].addr,
                                 &s->ocram);
 
+    /* SNVS */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->snvs), errp)) {
+        return;
+    }
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->snvs), 0,
+                    fsl_imx8mm_memmap[FSL_IMX8MM_SNVS_HP].addr);
+
     /* Unimplemented devices */
     for (i = 0; i < ARRAY_SIZE(fsl_imx8mm_memmap); i++) {
         switch (i) {
@@ -364,6 +373,7 @@ static void fsl_imx8mm_realize(DeviceState *dev, Error **errp)
         case FSL_IMX8MM_GIC_REDIST:
         case FSL_IMX8MM_RAM:
         case FSL_IMX8MM_OCRAM:
+        case FSL_IMX8MM_SNVS_HP:
         case FSL_IMX8MM_UART1 ... FSL_IMX8MM_UART4:
             /* device implemented and treated above */
             break;
diff --git a/include/hw/arm/fsl-imx8mm.h b/include/hw/arm/fsl-imx8mm.h
index df35f0f5ac5..8a172b89e0b 100644
--- a/include/hw/arm/fsl-imx8mm.h
+++ b/include/hw/arm/fsl-imx8mm.h
@@ -13,6 +13,7 @@
 #include "cpu.h"
 #include "hw/char/imx_serial.h"
 #include "hw/intc/arm_gicv3_common.h"
+#include "hw/misc/imx7_snvs.h"
 #include "hw/misc/imx8mp_analog.h"
 #include "hw/misc/imx8mp_ccm.h"
 #include "qom/object.h"
@@ -37,6 +38,7 @@ struct FslImx8mmState {
     GICv3State         gic;
     IMX8MPCCMState     ccm;
     IMX8MPAnalogState  analog;
+    IMX7SNVSState      snvs;
     IMXSerialState     uart[FSL_IMX8MM_NUM_UARTS];
     MemoryRegion ocram;
 };