[RFC PATCH 18/23] hw/misc: add support for RT500's clock controller

[Octavian Purdila <tavip@google.com>]

It supports system and audio PLL initialization and SYSTICK and
OSTIMER clock source selection.

Signed-off-by: Octavian Purdila <tavip@google.com>
---
 hw/arm/svd/meson.build            |   8 +
 hw/misc/Kconfig                   |   6 +
 hw/misc/meson.build               |   2 +
 hw/misc/rt500_clkctl0.c           | 243 ++++++++++++++++++++++++++++++
 hw/misc/rt500_clkctl1.c           | 224 +++++++++++++++++++++++++++
 hw/misc/trace-events              |   8 +
 include/hw/misc/rt500_clk_freqs.h |  18 +++
 include/hw/misc/rt500_clkctl0.h   |  37 +++++
 include/hw/misc/rt500_clkctl1.h   |  38 +++++
 9 files changed, 584 insertions(+)
 create mode 100644 hw/misc/rt500_clkctl0.c
 create mode 100644 hw/misc/rt500_clkctl1.c
 create mode 100644 include/hw/misc/rt500_clk_freqs.h
 create mode 100644 include/hw/misc/rt500_clkctl0.h
 create mode 100644 include/hw/misc/rt500_clkctl1.h

diff --git a/hw/arm/svd/meson.build b/hw/arm/svd/meson.build
index 8b3b045137..6ab13f8757 100644
--- a/hw/arm/svd/meson.build
+++ b/hw/arm/svd/meson.build
@@ -14,3 +14,11 @@ genh += custom_target('flexcomm_spi.h',
                       output: 'flexcomm_spi.h',
                       input: 'MIMXRT595S_cm33.xml',
                       command: [ svd_gen_header, '-i', '@INPUT@', '-o', '@OUTPUT@', '-p', 'SPI0', '-t', 'FLEXCOMM_SPI'])
+genh += custom_target('rt500_clkctl0.h',
+                      output: 'rt500_clkctl0.h',
+                      input: 'MIMXRT595S_cm33.xml',
+                      command: [ svd_gen_header, '-i', '@INPUT@', '-o', '@OUTPUT@', '-p', 'CLKCTL0', '-t', 'RT500_CLKCTL0'])
+genh += custom_target('rt500_clkctl1.h',
+                      output: 'rt500_clkctl1.h',
+                      input: 'MIMXRT595S_cm33.xml',
+                      command: [ svd_gen_header, '-i', '@INPUT@', '-o', '@OUTPUT@', '-p', 'CLKCTL1', '-t', 'RT500_CLKCTL1'])
diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig
index 14167ae9e8..392ae9e84f 100644
--- a/hw/misc/Kconfig
+++ b/hw/misc/Kconfig
@@ -216,4 +216,10 @@ config XLNX_VERSAL_TRNG
 config FLEXCOMM
     bool
 
+config RT500_CLKCTL0
+    bool
+
+config RT500_CLKCTL1
+    bool
+
 source macio/Kconfig
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index 8414767ae3..68929949a6 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -158,3 +158,5 @@ system_ss.add(when: 'CONFIG_SBSA_REF', if_true: files('sbsa_ec.c'))
 system_ss.add(when: 'CONFIG_LASI', if_true: files('lasi.c'))
 
 system_ss.add(when: 'CONFIG_FLEXCOMM', if_true: files('flexcomm.c'))
+system_ss.add(when: 'CONFIG_RT500_CLKCTL0', if_true: files('rt500_clkctl0.c'))
+system_ss.add(when: 'CONFIG_RT500_CLKCTL1', if_true: files('rt500_clkctl1.c'))
diff --git a/hw/misc/rt500_clkctl0.c b/hw/misc/rt500_clkctl0.c
new file mode 100644
index 0000000000..84b5631924
--- /dev/null
+++ b/hw/misc/rt500_clkctl0.c
@@ -0,0 +1,243 @@
+/*
+ * QEMU model for RT500 Clock Controller
+ *
+ * Copyright (c) 2024 Google LLC
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/clock.h"
+#include "hw/irq.h"
+#include "hw/qdev-clock.h"
+#include "hw/qdev-properties.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "exec/address-spaces.h"
+#include "hw/regs.h"
+#include "hw/misc/rt500_clkctl0.h"
+#include "hw/misc/rt500_clk_freqs.h"
+
+#include "trace.h"
+
+#define reg(field) offsetof(RT500_CLKCTL0_Type, field)
+#define REG_NO (sizeof(RT500_CLKCTL0_Type) / sizeof(uint32_t))
+#define regi(x) (reg(x) / sizeof(uint32_t))
+
+static RT500_CLKCTL0_REGISTER_NAMES_ARRAY(reg_names);
+
+static MemTxResult rt500_clkctl0_read(void *opaque, hwaddr addr,
+                                      uint64_t *data, unsigned size,
+                                      MemTxAttrs attrs)
+{
+    RT500ClkCtl0State *s = opaque;
+    MemTxResult ret = MEMTX_OK;
+
+    if (!reg32_aligned_access(addr, size)) {
+        ret = MEMTX_ERROR;
+        goto out;
+    }
+
+    switch (addr) {
+    case reg(PSCCTL0_SET):
+    case reg(PSCCTL1_SET):
+    case reg(PSCCTL2_SET):
+    case reg(PSCCTL0_CLR):
+    case reg(PSCCTL1_CLR):
+    case reg(PSCCTL2_CLR):
+        /* write only registers */
+        ret = MEMTX_ERROR;
+        break;
+    default:
+        *data = reg32_read(&s->regs, addr);
+        break;
+    }
+
+out:
+    trace_rt500_clkctl0_reg_read(reg_names[addr], addr, *data);
+    return ret;
+}
+
+static inline void set_systick_clk_from_div(RT500ClkCtl0State *s)
+{
+    uint32_t div = s->regs.SYSTICKFCLKDIV_b.DIV + 1;
+    uint32_t rate = clock_get_hz(s->sysclk);
+
+    clock_set_hz(s->systick_clk, rate / div);
+}
+
+static MemTxResult rt500_clkctl0_write(void *opaque, hwaddr addr,
+                                       uint64_t value, unsigned size,
+                                       MemTxAttrs attrs)
+{
+    RT500ClkCtl0State *s = opaque;
+    MemTxResult ret = MEMTX_OK;
+    static uint32_t wr_mask[REG_NO] = {
+        [0 ... REG_NO - 1] = BITS(31, 0),
+        [regi(FRO_CAPVAL)] = 0,
+        [regi(FROCLKSTATUS)] = 0,
+    };
+
+    if (!reg32_aligned_access(addr, size)) {
+        ret = MEMTX_ERROR;
+        goto out;
+    }
+
+    switch (addr) {
+    case reg(PSCCTL0):
+    case reg(PSCCTL1):
+    case reg(PSCCTL2):
+    {
+        reg32_write(&s->regs, addr, value, wr_mask);
+        break;
+    }
+    case reg(PSCCTL0_SET):
+    case reg(PSCCTL1_SET):
+    case reg(PSCCTL2_SET):
+    {
+        uint32_t update_addr = reg(PSCCTL0) + (addr - reg(PSCCTL0_SET));
+        reg32_write(&s->regs, update_addr,
+                    reg32_read(&s->regs, update_addr) | value, wr_mask);
+        break;
+    }
+    case reg(PSCCTL0_CLR):
+    case reg(PSCCTL1_CLR):
+    case reg(PSCCTL2_CLR):
+    {
+        uint32_t update_addr = reg(PSCCTL0) + (addr - reg(PSCCTL0_CLR));
+        reg32_write(&s->regs, update_addr,
+                    reg32_read(&s->regs, update_addr) & ~value, wr_mask);
+        break;
+    }
+    default:
+        reg32_write(&s->regs, addr, value, wr_mask);
+    }
+
+    switch (addr) {
+    case reg(SYSPLL0PFD):
+    {
+        if (!s->regs.SYSPLL0PFD_b.PFD0_CLKGATE) {
+            s->regs.SYSPLL0PFD_b.PFD0_CLKRDY = 1;
+        } else {
+            s->regs.SYSPLL0PFD_b.PFD0_CLKRDY = 0;
+        }
+        if (!s->regs.SYSPLL0PFD_b.PFD1_CLKGATE) {
+            s->regs.SYSPLL0PFD_b.PFD1_CLKRDY = 1;
+        } else {
+            s->regs.SYSPLL0PFD_b.PFD1_CLKRDY = 0;
+        }
+        if (!s->regs.SYSPLL0PFD_b.PFD2_CLKGATE) {
+            s->regs.SYSPLL0PFD_b.PFD2_CLKRDY = 1;
+        } else {
+            s->regs.SYSPLL0PFD_b.PFD2_CLKRDY = 0;
+        }
+        if (!s->regs.SYSPLL0PFD_b.PFD3_CLKGATE) {
+            s->regs.SYSPLL0PFD_b.PFD3_CLKRDY = 1;
+        } else {
+            s->regs.SYSPLL0PFD_b.PFD3_CLKRDY = 0;
+        }
+        break;
+    }
+    case reg(SYSTICKFCLKSEL):
+    {
+        switch (s->regs.SYSTICKFCLKSEL_b.SEL) {
+        case SYSTICKFCLKSEL_DIVOUT:
+        {
+            set_systick_clk_from_div(s);
+            break;
+        }
+        case SYSTICKFCLKSEL_LPOSC:
+        {
+            clock_set_hz(s->systick_clk, LPOSC_CLK_HZ);
+            break;
+        }
+        case SYSTICKFCLKSEL_32KHZRTC:
+        {
+            clock_set_hz(s->systick_clk, RTC32KHZ_CLK_HZ);
+            break;
+        }
+        case SYSTICKFCLKSEL_NONE:
+        {
+            clock_set_hz(s->systick_clk, 0);
+            break;
+        }
+        }
+        clock_propagate(s->systick_clk);
+        break;
+    }
+    case reg(SYSTICKFCLKDIV):
+    {
+        if (s->regs.SYSTICKFCLKSEL_b.SEL == SYSTICKFCLKSEL_DIVOUT) {
+            set_systick_clk_from_div(s);
+            clock_propagate(s->systick_clk);
+        }
+        break;
+    }
+    }
+
+out:
+    trace_rt500_clkctl0_reg_write(reg_names[addr], addr, value);
+    return ret;
+
+    return MEMTX_OK;
+}
+
+static const MemoryRegionOps rt500_clkctl0_ops = {
+    .read_with_attrs = rt500_clkctl0_read,
+    .write_with_attrs = rt500_clkctl0_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static void rt500_clkctl0_reset(DeviceState *dev)
+{
+    RT500ClkCtl0State *s = RT500_CLKCTL0(dev);
+
+    memset(&s->regs, 0, sizeof(s->regs));
+
+    rt500_clkctl0_reset_registers(&s->regs);
+
+    /* clock OK immediately after reset */
+    s->regs.FROCLKSTATUS = 0x00000001;
+}
+
+static void rt500_clkctl0_init(Object *obj)
+{
+    RT500ClkCtl0State *s = RT500_CLKCTL0(obj);
+
+    memory_region_init_io(&s->mmio, obj, &rt500_clkctl0_ops, s,
+                          TYPE_RT500_CLKCTL0, sizeof(s->regs));
+    sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
+    s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
+    s->systick_clk = qdev_init_clock_out(DEVICE(s), "systick_clk");
+}
+
+static void rt500_clkctl0_realize(DeviceState *dev, Error **errp)
+{
+}
+
+static void rt500_clkctl0_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->reset = rt500_clkctl0_reset;
+    dc->realize = rt500_clkctl0_realize;
+}
+
+static const TypeInfo rt500_clkctl0_info = {
+    .name          = TYPE_RT500_CLKCTL0,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(RT500ClkCtl0State),
+    .instance_init = rt500_clkctl0_init,
+    .class_init    = rt500_clkctl0_class_init,
+};
+
+static void rt500_clkctl0_register_types(void)
+{
+    type_register_static(&rt500_clkctl0_info);
+}
+
+type_init(rt500_clkctl0_register_types)
+
diff --git a/hw/misc/rt500_clkctl1.c b/hw/misc/rt500_clkctl1.c
new file mode 100644
index 0000000000..a5a8cf6564
--- /dev/null
+++ b/hw/misc/rt500_clkctl1.c
@@ -0,0 +1,224 @@
+/*
+ * QEMU model for RT500 Clock Controller
+ *
+ * Copyright (c) 2024 Google LLC
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/clock.h"
+#include "hw/irq.h"
+#include "hw/qdev-clock.h"
+#include "hw/qdev-properties.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "exec/address-spaces.h"
+#include "hw/regs.h"
+#include "hw/misc/rt500_clkctl1.h"
+#include "hw/misc/rt500_clk_freqs.h"
+
+#include "trace.h"
+
+#define reg(field) offsetof(RT500_CLKCTL1_Type, field)
+#define REG_NO (sizeof(RT500_CLKCTL1_Type) / sizeof(uint32_t))
+#define regi(x) (reg(x) / sizeof(uint32_t))
+
+static RT500_CLKCTL1_REGISTER_NAMES_ARRAY(reg_names);
+
+static MemTxResult rt500_clkctl1_read(void *opaque, hwaddr addr,
+                                      uint64_t *data, unsigned size,
+                                      MemTxAttrs attrs)
+{
+    RT500ClkCtl1State *s = opaque;
+    MemTxResult ret = MEMTX_OK;
+
+    if (!reg32_aligned_access(addr, size)) {
+        ret = MEMTX_ERROR;
+        goto out;
+    }
+
+    switch (addr) {
+    case reg(PSCCTL0_SET):
+    case reg(PSCCTL1_SET):
+    case reg(PSCCTL2_SET):
+    case reg(PSCCTL0_CLR):
+    case reg(PSCCTL1_CLR):
+    case reg(PSCCTL2_CLR):
+        /* write only registers */
+        ret = MEMTX_ERROR;
+        break;
+    default:
+        *data = reg32_read(&s->regs, addr);
+        break;
+    }
+
+out:
+    trace_rt500_clkctl1_reg_read(reg_names[addr], addr, *data);
+    return ret;
+}
+
+static MemTxResult rt500_clkctl1_write(void *opaque, hwaddr addr,
+                                       uint64_t value, unsigned size,
+                                       MemTxAttrs attrs)
+{
+    RT500ClkCtl1State *s = opaque;
+    MemTxResult ret = MEMTX_OK;
+    static uint32_t wr_mask[REG_NO] = {
+        [0 ... REG_NO - 1] = BITS(31, 0),
+    };
+
+    if (!reg32_aligned_access(addr, size)) {
+        ret = MEMTX_ERROR;
+        goto out;
+    }
+
+    switch (addr) {
+    case reg(PSCCTL0):
+    case reg(PSCCTL1):
+    case reg(PSCCTL2):
+    {
+        reg32_write(&s->regs, addr, value, wr_mask);
+        break;
+    }
+    case reg(PSCCTL0_SET):
+    case reg(PSCCTL1_SET):
+    case reg(PSCCTL2_SET):
+    {
+        uint32_t update_addr = reg(PSCCTL0) + (addr - reg(PSCCTL0_SET));
+        reg32_write(&s->regs, update_addr,
+                    reg32_read(&s->regs, update_addr) | value, wr_mask);
+        break;
+    }
+    case reg(PSCCTL0_CLR):
+    case reg(PSCCTL1_CLR):
+    case reg(PSCCTL2_CLR):
+    {
+        uint32_t update_addr = reg(PSCCTL0) + (addr - reg(PSCCTL0_CLR));
+        reg32_write(&s->regs, update_addr,
+                    reg32_read(&s->regs, update_addr) & ~value, wr_mask);
+        break;
+    }
+    default:
+        reg32_write(&s->regs, addr, value, wr_mask);
+    }
+
+    switch (addr) {
+    case reg(AUDIOPLL0PFD):
+    {
+        if (!s->regs.AUDIOPLL0PFD_b.PFD0_CLKGATE) {
+            s->regs.AUDIOPLL0PFD_b.PFD0_CLKRDY = 1;
+        } else {
+            s->regs.AUDIOPLL0PFD_b.PFD0_CLKRDY = 0;
+        }
+        if (!s->regs.AUDIOPLL0PFD_b.PFD1_CLKGATE) {
+            s->regs.AUDIOPLL0PFD_b.PFD1_CLKRDY = 1;
+        } else {
+            s->regs.AUDIOPLL0PFD_b.PFD1_CLKRDY = 0;
+        }
+        if (!s->regs.AUDIOPLL0PFD_b.PFD2_CLKGATE) {
+            s->regs.AUDIOPLL0PFD_b.PFD2_CLKRDY = 1;
+        } else {
+            s->regs.AUDIOPLL0PFD_b.PFD2_CLKRDY = 0;
+        }
+        if (!s->regs.AUDIOPLL0PFD_b.PFD3_CLKGATE) {
+            s->regs.AUDIOPLL0PFD_b.PFD3_CLKRDY = 1;
+        } else {
+            s->regs.AUDIOPLL0PFD_b.PFD3_CLKRDY = 0;
+        }
+        break;
+    }
+    case reg(OSEVENTTFCLKSEL):
+    {
+        switch (s->regs.OSEVENTTFCLKSEL_b.SEL) {
+        case OSEVENTTFCLKSEL_LPOSC:
+        {
+            clock_set_hz(s->ostimer_clk, LPOSC_CLK_HZ);
+            break;
+        }
+        case OSEVENTTFCLKSEL_32KHZRTC:
+        {
+            clock_set_hz(s->ostimer_clk, RTC32KHZ_CLK_HZ);
+            break;
+        }
+        case OSEVENTTFCLKSEL_HCLK:
+        {
+            clock_set_hz(s->ostimer_clk, clock_get_hz(s->sysclk));
+            break;
+        }
+        case OSEVENTTFCLKSEL_NONE:
+        {
+            clock_set_hz(s->ostimer_clk, 0);
+            break;
+        }
+        }
+
+        clock_propagate(s->ostimer_clk);
+        break;
+    }
+    }
+
+out:
+    trace_rt500_clkctl1_reg_write(reg_names[addr], addr, value);
+    return ret;
+
+    return MEMTX_OK;
+}
+
+
+static const MemoryRegionOps rt500_clkctl1_ops = {
+    .read_with_attrs = rt500_clkctl1_read,
+    .write_with_attrs = rt500_clkctl1_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static void rt500_clkctl1_reset(DeviceState *dev)
+{
+    RT500ClkCtl1State *s = RT500_CLKCTL1(dev);
+
+    memset(&s->regs, 0, sizeof(s->regs));
+
+    rt500_clkctl1_reset_registers(&s->regs);
+}
+
+static void rt500_clkctl1_init(Object *obj)
+{
+    RT500ClkCtl1State *s = RT500_CLKCTL1(obj);
+
+    memory_region_init_io(&s->mmio, obj, &rt500_clkctl1_ops, s,
+                          TYPE_RT500_CLKCTL1, sizeof(s->regs));
+    sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
+    s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
+    s->ostimer_clk = qdev_init_clock_out(DEVICE(s), "ostimer_clk");
+}
+
+static void rt500_clkctl1_realize(DeviceState *dev, Error **errp)
+{
+}
+
+static void rt500_clkctl1_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->reset = rt500_clkctl1_reset;
+    dc->realize = rt500_clkctl1_realize;
+}
+
+static const TypeInfo rt500_clkctl1_info = {
+    .name          = TYPE_RT500_CLKCTL1,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(RT500ClkCtl1State),
+    .instance_init = rt500_clkctl1_init,
+    .class_init    = rt500_clkctl1_class_init,
+};
+
+static void rt500_clkctl1_register_types(void)
+{
+    type_register_static(&rt500_clkctl1_info);
+}
+
+type_init(rt500_clkctl1_register_types)
+
diff --git a/hw/misc/trace-events b/hw/misc/trace-events
index 71ec77de29..e65fcfa613 100644
--- a/hw/misc/trace-events
+++ b/hw/misc/trace-events
@@ -357,3 +357,11 @@ flexcomm_reset(void) ""
 flexcomm_irq(const char *id, uint8_t irq) "%s %d"
 flexcomm_reg_read(const char *devname, const char *regname, uint32_t addr, uint32_t val) "%s: %s[0x%04x] -> 0x%08x"
 flexcomm_reg_write(const char *dename, const char *regname, uint32_t addr, uint32_t val) "%s: %s[0x%04x] <- 0x%08x"
+
+# rt500_clkctl0.c
+rt500_clkctl0_reg_read(const char *regname, uint32_t addr, uint32_t val) "%s[0x%04x] -> 0x%08x"
+rt500_clkctl0_reg_write(const char *regname, uint32_t addr, uint32_t val) "%s[0x%04x] <- 0x%08x"
+
+# rt500_clkctl1.c
+rt500_clkctl1_reg_read(const char *regname, uint32_t addr, uint32_t val) "%s[0x%04x] -> 0x%08x"
+rt500_clkctl1_reg_write(const char *regname, uint32_t addr, uint32_t val) "%s[0x%04x] <- 0x%08x"
diff --git a/include/hw/misc/rt500_clk_freqs.h b/include/hw/misc/rt500_clk_freqs.h
new file mode 100644
index 0000000000..1e366d4967
--- /dev/null
+++ b/include/hw/misc/rt500_clk_freqs.h
@@ -0,0 +1,18 @@
+/*
+ * QEMU model for RT500 Clock Controller
+ *
+ * Copyright (c) 2024 Google LLC
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef HW_MISC_RT500_CLK_FREQS_H
+#define HW_MISC_RT500_CLK_FREQS_H
+
+#define RTC32KHZ_CLK_HZ 32000
+#define LPOSC_CLK_HZ 1000000
+
+#endif /* HW_MISC_RT500_CLK_FREQS_H */
diff --git a/include/hw/misc/rt500_clkctl0.h b/include/hw/misc/rt500_clkctl0.h
new file mode 100644
index 0000000000..798ded96e3
--- /dev/null
+++ b/include/hw/misc/rt500_clkctl0.h
@@ -0,0 +1,37 @@
+/*
+ * QEMU model for RT500 Clock Controller
+ *
+ * Copyright (c) 2024 Google LLC
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef HW_MISC_RT500_CLKCTL0_H
+#define HW_MISC_RT500_CLKCTL0_H
+
+#include "hw/arm/svd/rt500_clkctl0.h"
+#include "hw/sysbus.h"
+
+#define TYPE_RT500_CLKCTL0 "rt500-clkctl0"
+#define RT500_CLKCTL0(o) OBJECT_CHECK(RT500ClkCtl0State, o, TYPE_RT500_CLKCTL0)
+
+#define SYSTICKFCLKSEL_DIVOUT 0
+#define SYSTICKFCLKSEL_LPOSC 1
+#define SYSTICKFCLKSEL_32KHZRTC 2
+#define SYSTICKFCLKSEL_NONE 7
+
+typedef struct {
+    /* <private> */
+    SysBusDevice parent_obj;
+
+    /* <public> */
+    MemoryRegion mmio;
+    RT500_CLKCTL0_Type regs;
+    Clock *systick_clk;
+    Clock *sysclk;
+} RT500ClkCtl0State;
+
+#endif /* HW_MISC_RT500_CLKCTL0_H */
diff --git a/include/hw/misc/rt500_clkctl1.h b/include/hw/misc/rt500_clkctl1.h
new file mode 100644
index 0000000000..7b6e56e294
--- /dev/null
+++ b/include/hw/misc/rt500_clkctl1.h
@@ -0,0 +1,38 @@
+/*
+ * QEMU model for RT500 Clock Controller
+ *
+ * Copyright (c) 2024 Google LLC
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+
+#ifndef HW_MISC_RT500_CLKCTL1_H
+#define HW_MISC_RT500_CLKCTL1_H
+
+#include "hw/arm/svd/rt500_clkctl1.h"
+#include "hw/sysbus.h"
+
+#define TYPE_RT500_CLKCTL1 "rt500-clkctl1"
+#define RT500_CLKCTL1(o) OBJECT_CHECK(RT500ClkCtl1State, o, TYPE_RT500_CLKCTL1)
+
+#define OSEVENTTFCLKSEL_LPOSC 0
+#define OSEVENTTFCLKSEL_32KHZRTC 1
+#define OSEVENTTFCLKSEL_HCLK 2
+#define OSEVENTTFCLKSEL_NONE 7
+
+typedef struct {
+    /* <private> */
+    SysBusDevice parent_obj;
+
+    /* <public> */
+    MemoryRegion mmio;
+    RT500_CLKCTL1_Type regs;
+    Clock *sysclk;
+    Clock *ostimer_clk;
+} RT500ClkCtl1State;
+
+#endif /* HW_MISC_RT500_CLKCTL1_H */
-- 
2.46.0.rc2.264.g509ed76dc8-goog