AST2700 have two SCU controllers which are SCU and SCUIO.
Both SCU and SCUIO registers are not compatible previous SOCs
, introduces new registers and adds ast2700 scu, sucio class init handler.
The pclk divider selection of SCUIO is defined in SCUIO280[20:18] and
the pclk divider selection of SCU is defined in SCU280[25:23].
Both of them are not compatible AST2600 SOCs, adds a get_apb_freq function
and trace-event for AST2700 SCU and SCUIO.
Signed-off-by: Troy Lee <troy_...@aspeedtech.com>
Signed-off-by: Jamin Lin <jamin_...@aspeedtech.com>
Reviewed-by: Cédric Le Goater <c...@kaod.org>
---
hw/misc/aspeed_scu.c | 306 ++++++++++++++++++++++++++++++++++-
hw/misc/trace-events | 4 +
include/hw/misc/aspeed_scu.h | 47 +++++-
3 files changed, 351 insertions(+), 6 deletions(-)
diff --git a/hw/misc/aspeed_scu.c b/hw/misc/aspeed_scu.c
index 1ac04b6cb0..eb38ea8e19 100644
--- a/hw/misc/aspeed_scu.c
+++ b/hw/misc/aspeed_scu.c
@@ -134,6 +134,48 @@
#define AST2600_CLK TO_REG(0x40)
+#define AST2700_SILICON_REV TO_REG(0x00)
+#define AST2700_HW_STRAP1 TO_REG(0x10)
+#define AST2700_HW_STRAP1_CLR TO_REG(0x14)
+#define AST2700_HW_STRAP1_LOCK TO_REG(0x20)
+#define AST2700_HW_STRAP1_SEC1 TO_REG(0x24)
+#define AST2700_HW_STRAP1_SEC2 TO_REG(0x28)
+#define AST2700_HW_STRAP1_SEC3 TO_REG(0x2C)
+
+#define AST2700_SCU_CLK_SEL_1 TO_REG(0x280)
+#define AST2700_SCU_HPLL_PARAM TO_REG(0x300)
+#define AST2700_SCU_HPLL_EXT_PARAM TO_REG(0x304)
+#define AST2700_SCU_DPLL_PARAM TO_REG(0x308)
+#define AST2700_SCU_DPLL_EXT_PARAM TO_REG(0x30c)
+#define AST2700_SCU_MPLL_PARAM TO_REG(0x310)
+#define AST2700_SCU_MPLL_EXT_PARAM TO_REG(0x314)
+#define AST2700_SCU_D1CLK_PARAM TO_REG(0x320)
+#define AST2700_SCU_D2CLK_PARAM TO_REG(0x330)
+#define AST2700_SCU_CRT1CLK_PARAM TO_REG(0x340)
+#define AST2700_SCU_CRT2CLK_PARAM TO_REG(0x350)
+#define AST2700_SCU_MPHYCLK_PARAM TO_REG(0x360)
+#define AST2700_SCU_FREQ_CNTR TO_REG(0x3b0)
+#define AST2700_SCU_CPU_SCRATCH_0 TO_REG(0x780)
+#define AST2700_SCU_CPU_SCRATCH_1 TO_REG(0x784)
+
+#define AST2700_SCUIO_CLK_STOP_CTL_1 TO_REG(0x240)
+#define AST2700_SCUIO_CLK_STOP_CLR_1 TO_REG(0x244)
+#define AST2700_SCUIO_CLK_STOP_CTL_2 TO_REG(0x260)
+#define AST2700_SCUIO_CLK_STOP_CLR_2 TO_REG(0x264)
+#define AST2700_SCUIO_CLK_SEL_1 TO_REG(0x280)
+#define AST2700_SCUIO_CLK_SEL_2 TO_REG(0x284)
+#define AST2700_SCUIO_HPLL_PARAM TO_REG(0x300)
+#define AST2700_SCUIO_HPLL_EXT_PARAM TO_REG(0x304)
+#define AST2700_SCUIO_APLL_PARAM TO_REG(0x310)
+#define AST2700_SCUIO_APLL_EXT_PARAM TO_REG(0x314)
+#define AST2700_SCUIO_DPLL_PARAM TO_REG(0x320)
+#define AST2700_SCUIO_DPLL_EXT_PARAM TO_REG(0x324)
+#define AST2700_SCUIO_DPLL_PARAM_READ TO_REG(0x328)
+#define AST2700_SCUIO_DPLL_EXT_PARAM_READ TO_REG(0x32c)
+#define AST2700_SCUIO_UARTCLK_GEN TO_REG(0x330)
+#define AST2700_SCUIO_HUARTCLK_GEN TO_REG(0x334)
+#define AST2700_SCUIO_CLK_DUTY_MEAS_RST TO_REG(0x388)
+
#define SCU_IO_REGION_SIZE 0x1000
static const uint32_t ast2400_a0_resets[ASPEED_SCU_NR_REGS] = {
@@ -244,6 +286,25 @@ static uint32_t
aspeed_1030_scu_get_apb_freq(AspeedSCUState *s)
/ asc->apb_divider;
}
+static uint32_t aspeed_2700_scu_get_apb_freq(AspeedSCUState *s)
+{
+ AspeedSCUClass *asc = ASPEED_SCU_GET_CLASS(s);
+ uint32_t hpll = asc->calc_hpll(s, s->regs[AST2700_SCU_HPLL_PARAM]);
+
+ return hpll / (SCU_CLK_GET_PCLK_DIV(s->regs[AST2700_SCU_CLK_SEL_1]) + 1)
+ / asc->apb_divider;
+}
+
+static uint32_t aspeed_2700_scuio_get_apb_freq(AspeedSCUState *s)
+{
+ AspeedSCUClass *asc = ASPEED_SCU_GET_CLASS(s);
+ uint32_t hpll = asc->calc_hpll(s, s->regs[AST2700_SCUIO_HPLL_PARAM]);
+
+ return hpll /
+ (SCUIO_AST2700_CLK_GET_PCLK_DIV(s->regs[AST2700_SCUIO_CLK_SEL_1]) + 1)
+ / asc->apb_divider;
+}
+
static uint64_t aspeed_scu_read(void *opaque, hwaddr offset, unsigned size)
{
AspeedSCUState *s = ASPEED_SCU(opaque);
@@ -258,7 +319,8 @@ static uint64_t aspeed_scu_read(void *opaque, hwaddr
offset, unsigned size)
switch (reg) {
case RNG_DATA:
- /* On hardware, RNG_DATA works regardless of
+ /*
+ * On hardware, RNG_DATA works regardless of
* the state of the enable bit in RNG_CTRL
*/
s->regs[RNG_DATA] = aspeed_scu_get_random();
@@ -494,6 +556,9 @@ static uint32_t aspeed_silicon_revs[] = {
AST2600_A3_SILICON_REV,
AST1030_A0_SILICON_REV,
AST1030_A1_SILICON_REV,
+ AST2700_A0_SILICON_REV,
+ AST2720_A0_SILICON_REV,
+ AST2750_A0_SILICON_REV,
};
bool is_supported_silicon_rev(uint32_t silicon_rev)
@@ -783,6 +848,243 @@ static const TypeInfo aspeed_2600_scu_info = {
.class_init = aspeed_2600_scu_class_init,
};
+static uint64_t aspeed_ast2700_scu_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ AspeedSCUState *s = ASPEED_SCU(opaque);
+ int reg = TO_REG(offset);
+
+ if (reg >= ASPEED_AST2700_SCU_NR_REGS) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Out-of-bounds read at offset 0x%" HWADDR_PRIx "\n",
+ __func__, offset);
+ return 0;
+ }
+
+ switch (reg) {
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Unhandled read at offset 0x%" HWADDR_PRIx "\n",
+ __func__, offset);
+ }
+
+ trace_aspeed_ast2700_scu_read(offset, size, s->regs[reg]);
+ return s->regs[reg];
+}
+
+static void aspeed_ast2700_scu_write(void *opaque, hwaddr offset,
+ uint64_t data64, unsigned size)
+{
+ AspeedSCUState *s = ASPEED_SCU(opaque);
+ int reg = TO_REG(offset);
+ /* Truncate here so bitwise operations below behave as expected */
+ uint32_t data = data64;
+
+ if (reg >= ASPEED_AST2700_SCU_NR_REGS) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Out-of-bounds write at offset 0x%" HWADDR_PRIx "\n",
+ __func__, offset);
+ return;
+ }
+
+ trace_aspeed_ast2700_scu_write(offset, size, data);
+
+ switch (reg) {
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Unhandeled write at offset 0x%" HWADDR_PRIx "\n",
+ __func__, offset);
+ break;
+ }
+
+ s->regs[reg] = data;
+}
+
+static const MemoryRegionOps aspeed_ast2700_scu_ops = {
+ .read = aspeed_ast2700_scu_read,
+ .write = aspeed_ast2700_scu_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid.min_access_size = 1,
+ .valid.max_access_size = 8,
+ .valid.unaligned = false,
+};
+
+static const uint32_t ast2700_a0_resets[ASPEED_AST2700_SCU_NR_REGS] = {
+ [AST2700_SILICON_REV] = AST2700_A0_SILICON_REV,
+ [AST2700_HW_STRAP1] = 0x00000800,
+ [AST2700_HW_STRAP1_CLR] = 0xFFF0FFF0,
+ [AST2700_HW_STRAP1_LOCK] = 0x00000FFF,
+ [AST2700_HW_STRAP1_SEC1] = 0x000000FF,
+ [AST2700_HW_STRAP1_SEC2] = 0x00000000,
+ [AST2700_HW_STRAP1_SEC3] = 0x1000408F,
+ [AST2700_SCU_HPLL_PARAM] = 0x0000009f,
+ [AST2700_SCU_HPLL_EXT_PARAM] = 0x8000004f,
+ [AST2700_SCU_DPLL_PARAM] = 0x0080009f,
+ [AST2700_SCU_DPLL_EXT_PARAM] = 0x8000004f,
+ [AST2700_SCU_MPLL_PARAM] = 0x00000040,
+ [AST2700_SCU_MPLL_EXT_PARAM] = 0x80000000,
+ [AST2700_SCU_D1CLK_PARAM] = 0x00050002,
+ [AST2700_SCU_D2CLK_PARAM] = 0x00050002,
+ [AST2700_SCU_CRT1CLK_PARAM] = 0x00050002,
+ [AST2700_SCU_CRT2CLK_PARAM] = 0x00050002,
+ [AST2700_SCU_MPHYCLK_PARAM] = 0x0000004c,
+ [AST2700_SCU_FREQ_CNTR] = 0x000375eb,
+ [AST2700_SCU_CPU_SCRATCH_0] = 0x00000000,
+ [AST2700_SCU_CPU_SCRATCH_1] = 0x00000004,
+};
+
+static void aspeed_ast2700_scu_reset(DeviceState *dev)
+{
+ AspeedSCUState *s = ASPEED_SCU(dev);
+ AspeedSCUClass *asc = ASPEED_SCU_GET_CLASS(dev);
+
+ memcpy(s->regs, asc->resets, asc->nr_regs * 4);
+}
+
+static void aspeed_2700_scu_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ AspeedSCUClass *asc = ASPEED_SCU_CLASS(klass);
+
+ dc->desc = "ASPEED 2700 System Control Unit";
+ dc->reset = aspeed_ast2700_scu_reset;
+ asc->resets = ast2700_a0_resets;
+ asc->calc_hpll = aspeed_2600_scu_calc_hpll;
+ asc->get_apb = aspeed_2700_scu_get_apb_freq;
+ asc->apb_divider = 4;
+ asc->nr_regs = ASPEED_AST2700_SCU_NR_REGS;
+ asc->clkin_25Mhz = true;
+ asc->ops = &aspeed_ast2700_scu_ops;
+}
+
+static uint64_t aspeed_ast2700_scuio_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ AspeedSCUState *s = ASPEED_SCU(opaque);
+ int reg = TO_REG(offset);
+ if (reg >= ASPEED_AST2700_SCU_NR_REGS) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Out-of-bounds read at offset 0x%" HWADDR_PRIx "\n",
+ __func__, offset);
+ return 0;
+ }
+
+ switch (reg) {
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Unhandled read at offset 0x%" HWADDR_PRIx "\n",
+ __func__, offset);
+ }
+
+ trace_aspeed_ast2700_scuio_read(offset, size, s->regs[reg]);
+ return s->regs[reg];
+}
+
+static void aspeed_ast2700_scuio_write(void *opaque, hwaddr offset,
+ uint64_t data64, unsigned size)
+{
+ AspeedSCUState *s = ASPEED_SCU(opaque);
+ int reg = TO_REG(offset);
+ /* Truncate here so bitwise operations below behave as expected */
+ uint32_t data = data64;
+ bool updated = false;
+
+ if (reg >= ASPEED_AST2700_SCU_NR_REGS) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Out-of-bounds write at offset 0x%" HWADDR_PRIx "\n",
+ __func__, offset);
+ return;
+ }
+
+ trace_aspeed_ast2700_scuio_write(offset, size, data);
+
+ switch (reg) {
+ case AST2700_SCUIO_CLK_STOP_CTL_1:
+ case AST2700_SCUIO_CLK_STOP_CTL_2:
+ s->regs[reg] |= data;
+ updated = true;
+ break;
+ case AST2700_SCUIO_CLK_STOP_CLR_1:
+ case AST2700_SCUIO_CLK_STOP_CLR_2:
+ s->regs[reg - 1] ^= data;
+ updated = true;
+ break;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Unhandeled write at offset 0x%" HWADDR_PRIx "\n",
+ __func__, offset);
+ break;
+ }
+
+ if (!updated) {
+ s->regs[reg] = data;
+ }
+}
+
+static const MemoryRegionOps aspeed_ast2700_scuio_ops = {
+ .read = aspeed_ast2700_scuio_read,
+ .write = aspeed_ast2700_scuio_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid.min_access_size = 1,
+ .valid.max_access_size = 8,
+ .valid.unaligned = false,
+};
+
+static const uint32_t ast2700_a0_resets_io[ASPEED_AST2700_SCU_NR_REGS] = {
+ [AST2700_SILICON_REV] = 0x06000003,
+ [AST2700_HW_STRAP1] = 0x00000504,
+ [AST2700_HW_STRAP1_CLR] = 0xFFF0FFF0,
+ [AST2700_HW_STRAP1_LOCK] = 0x00000FFF,
+ [AST2700_HW_STRAP1_SEC1] = 0x000000FF,
+ [AST2700_HW_STRAP1_SEC2] = 0x00000000,
+ [AST2700_HW_STRAP1_SEC3] = 0x1000408F,
+ [AST2700_SCUIO_CLK_STOP_CTL_1] = 0xffff8400,
+ [AST2700_SCUIO_CLK_STOP_CTL_2] = 0x00005f30,
+ [AST2700_SCUIO_CLK_SEL_1] = 0x86900000,
+ [AST2700_SCUIO_CLK_SEL_2] = 0x00400000,
+ [AST2700_SCUIO_HPLL_PARAM] = 0x10000027,
+ [AST2700_SCUIO_HPLL_EXT_PARAM] = 0x80000014,
+ [AST2700_SCUIO_APLL_PARAM] = 0x1000001f,
+ [AST2700_SCUIO_APLL_EXT_PARAM] = 0x8000000f,
+ [AST2700_SCUIO_DPLL_PARAM] = 0x106e42ce,
+ [AST2700_SCUIO_DPLL_EXT_PARAM] = 0x80000167,
+ [AST2700_SCUIO_DPLL_PARAM_READ] = 0x106e42ce,
+ [AST2700_SCUIO_DPLL_EXT_PARAM_READ] = 0x80000167,
+ [AST2700_SCUIO_UARTCLK_GEN] = 0x00014506,
+ [AST2700_SCUIO_HUARTCLK_GEN] = 0x000145c0,
+ [AST2700_SCUIO_CLK_DUTY_MEAS_RST] = 0x0c9100d2,
+};
+
+static void aspeed_2700_scuio_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ AspeedSCUClass *asc = ASPEED_SCU_CLASS(klass);
+
+ dc->desc = "ASPEED 2700 System Control Unit I/O";
+ dc->reset = aspeed_ast2700_scu_reset;
+ asc->resets = ast2700_a0_resets_io;
+ asc->calc_hpll = aspeed_2600_scu_calc_hpll;
+ asc->get_apb = aspeed_2700_scuio_get_apb_freq;
+ asc->apb_divider = 2;
+ asc->nr_regs = ASPEED_AST2700_SCU_NR_REGS;
+ asc->clkin_25Mhz = true;
+ asc->ops = &aspeed_ast2700_scuio_ops;
+}
+
+static const TypeInfo aspeed_2700_scu_info = {
+ .name = TYPE_ASPEED_2700_SCU,
+ .parent = TYPE_ASPEED_SCU,
+ .instance_size = sizeof(AspeedSCUState),
+ .class_init = aspeed_2700_scu_class_init,
+};
+
+static const TypeInfo aspeed_2700_scuio_info = {
+ .name = TYPE_ASPEED_2700_SCUIO,
+ .parent = TYPE_ASPEED_SCU,
+ .instance_size = sizeof(AspeedSCUState),
+ .class_init = aspeed_2700_scuio_class_init,
+};
+
static const uint32_t ast1030_a1_resets[ASPEED_AST2600_SCU_NR_REGS] = {
[AST2600_SYS_RST_CTRL] = 0xFFC3FED8,
[AST2600_SYS_RST_CTRL2] = 0x09FFFFFC,
@@ -841,6 +1143,8 @@ static void aspeed_scu_register_types(void)
type_register_static(&aspeed_2500_scu_info);
type_register_static(&aspeed_2600_scu_info);
type_register_static(&aspeed_1030_scu_info);
+ type_register_static(&aspeed_2700_scu_info);
+ type_register_static(&aspeed_2700_scuio_info);
}
type_init(aspeed_scu_register_types);
diff --git a/hw/misc/trace-events b/hw/misc/trace-events
index e13b648221..1be0717c0c 100644
--- a/hw/misc/trace-events
+++ b/hw/misc/trace-events
@@ -93,6 +93,10 @@ slavio_led_mem_readw(uint32_t ret) "Read diagnostic LED
0x%04x"
# aspeed_scu.c
aspeed_scu_write(uint64_t offset, unsigned size, uint32_t data) "To 0x%"
PRIx64 " of size %u: 0x%" PRIx32
aspeed_scu_read(uint64_t offset, unsigned size, uint32_t data) "To 0x%" PRIx64
" of size %u: 0x%" PRIx32
+aspeed_ast2700_scu_write(uint64_t offset, unsigned size, uint32_t data) "To
0x%" PRIx64 " of size %u: 0x%" PRIx32
+aspeed_ast2700_scu_read(uint64_t offset, unsigned size, uint32_t data) "To
0x%" PRIx64 " of size %u: 0x%" PRIx32
+aspeed_ast2700_scuio_write(uint64_t offset, unsigned size, uint32_t data) "To
0x%" PRIx64 " of size %u: 0x%" PRIx32
+aspeed_ast2700_scuio_read(uint64_t offset, unsigned size, uint32_t data) "To
0x%" PRIx64 " of size %u: 0x%" PRIx32
# mps2-scc.c
mps2_scc_read(uint64_t offset, uint64_t data, unsigned size) "MPS2 SCC read:
offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
diff --git a/include/hw/misc/aspeed_scu.h b/include/hw/misc/aspeed_scu.h
index 7cb6018dbc..58db28db45 100644
--- a/include/hw/misc/aspeed_scu.h
+++ b/include/hw/misc/aspeed_scu.h
@@ -19,10 +19,13 @@ OBJECT_DECLARE_TYPE(AspeedSCUState, AspeedSCUClass,
ASPEED_SCU)
#define TYPE_ASPEED_2400_SCU TYPE_ASPEED_SCU "-ast2400"
#define TYPE_ASPEED_2500_SCU TYPE_ASPEED_SCU "-ast2500"
#define TYPE_ASPEED_2600_SCU TYPE_ASPEED_SCU "-ast2600"
+#define TYPE_ASPEED_2700_SCU TYPE_ASPEED_SCU "-ast2700"
+#define TYPE_ASPEED_2700_SCUIO TYPE_ASPEED_SCU "io" "-ast2700"
#define TYPE_ASPEED_1030_SCU TYPE_ASPEED_SCU "-ast1030"
#define ASPEED_SCU_NR_REGS (0x1A8 >> 2)
#define ASPEED_AST2600_SCU_NR_REGS (0xE20 >> 2)
+#define ASPEED_AST2700_SCU_NR_REGS (0xE20 >> 2)
struct AspeedSCUState {
/*< private >*/
@@ -31,7 +34,7 @@ struct AspeedSCUState {
/*< public >*/
MemoryRegion iomem;
- uint32_t regs[ASPEED_AST2600_SCU_NR_REGS];
+ uint32_t regs[ASPEED_AST2700_SCU_NR_REGS];
uint32_t silicon_rev;
uint32_t hw_strap1;
uint32_t hw_strap2;
@@ -48,6 +51,9 @@ struct AspeedSCUState {
#define AST2600_A3_SILICON_REV 0x05030303U
#define AST1030_A0_SILICON_REV 0x80000000U
#define AST1030_A1_SILICON_REV 0x80010000U
+#define AST2700_A0_SILICON_REV 0x06000103U
+#define AST2720_A0_SILICON_REV 0x06000203U
+#define AST2750_A0_SILICON_REV 0x06000003U
#define ASPEED_IS_AST2500(si_rev) ((((si_rev) >> 24) & 0xff) == 0x04)
@@ -87,7 +93,8 @@ uint32_t aspeed_scu_get_apb_freq(AspeedSCUState *s);
* 1. 2012/12/29 Ryan Chen Create
*/
-/* SCU08 Clock Selection Register
+/*
+ * SCU08 Clock Selection Register
*
* 31 Enable Video Engine clock dynamic slow down
* 30:28 Video Engine clock slow down setting
@@ -109,7 +116,8 @@ uint32_t aspeed_scu_get_apb_freq(AspeedSCUState *s);
*/
#define SCU_CLK_GET_PCLK_DIV(x) (((x) >> 23) & 0x7)
-/* SCU24 H-PLL Parameter Register (for Aspeed AST2400 SOC)
+/*
+ * SCU24 H-PLL Parameter Register (for Aspeed AST2400 SOC)
*
* 18 H-PLL parameter selection
* 0: Select H-PLL by strapping resistors
@@ -127,7 +135,8 @@ uint32_t aspeed_scu_get_apb_freq(AspeedSCUState *s);
#define SCU_AST2400_H_PLL_BYPASS_EN (0x1 << 17)
#define SCU_AST2400_H_PLL_OFF (0x1 << 16)
-/* SCU24 H-PLL Parameter Register (for Aspeed AST2500 SOC)
+/*
+ * SCU24 H-PLL Parameter Register (for Aspeed AST2500 SOC)
*
* 21 Enable H-PLL reset
* 20 Enable H-PLL bypass mode
@@ -144,7 +153,8 @@ uint32_t aspeed_scu_get_apb_freq(AspeedSCUState *s);
#define SCU_H_PLL_BYPASS_EN (0x1 << 20)
#define SCU_H_PLL_OFF (0x1 << 19)
-/* SCU70 Hardware Strapping Register definition (for Aspeed AST2400 SOC)
+/*
+ * SCU70 Hardware Strapping Register definition (for Aspeed AST2400 SOC)
*
* 31:29 Software defined strapping registers
* 28:27 DRAM size setting (for VGA driver use)
@@ -361,4 +371,31 @@ uint32_t aspeed_scu_get_apb_freq(AspeedSCUState *s);
*/
#define SCU_AST1030_CLK_GET_PCLK_DIV(x) (((x) >> 8) & 0xf)
+/*
+ * SCU280 Clock Selection 1 Register (for Aspeed AST2700 SCUIO)
+ *
+ * 31:29 MHCLK_DIV
+ * 28 Reserved
+ * 27:25 RGMIICLK_DIV
+ * 24 Reserved
+ * 23:21 RMIICLK_DIV
+ * 20:18 PCLK_DIV
+ * 17:14 SDCLK_DIV
+ * 13 SDCLK_SEL
+ * 12 UART13CLK_SEL
+ * 11 UART12CLK_SEL
+ * 10 UART11CLK_SEL
+ * 9 UART10CLK_SEL
+ * 8 UART9CLK_SEL
+ * 7 UART8CLK_SEL
+ * 6 UART7CLK_SEL
+ * 5 UART6CLK_SEL
+ * 4 UARTDBCLK_SEL
+ * 3 UART4CLK_SEL
+ * 2 UART3CLK_SEL
+ * 1 UART2CLK_SEL
+ * 0 UART1CLK_SEL
+ */
+#define SCUIO_AST2700_CLK_GET_PCLK_DIV(x) (((x) >> 18) &
0x7)
+
#endif /* ASPEED_SCU_H */
--
2.25.1
