summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/soc/amd/genoa/Kconfig5
-rw-r--r--src/soc/amd/genoa/Makefile.inc1
-rw-r--r--src/soc/amd/genoa/acpi/mmio.asl21
-rw-r--r--src/soc/amd/genoa/chip.h7
-rw-r--r--src/soc/amd/genoa/chipset.cb12
-rw-r--r--src/soc/amd/genoa/i2c.c56
-rw-r--r--src/soc/amd/genoa/include/soc/i2c.h36
-rw-r--r--src/soc/amd/genoa/include/soc/iomap.h4
8 files changed, 130 insertions, 12 deletions
diff --git a/src/soc/amd/genoa/Kconfig b/src/soc/amd/genoa/Kconfig
index 210b3e5b91..cbf0ddd801 100644
--- a/src/soc/amd/genoa/Kconfig
+++ b/src/soc/amd/genoa/Kconfig
@@ -20,6 +20,7 @@ config SOC_SPECIFIC_OPTIONS
select SOC_AMD_COMMON_BLOCK_DATA_FABRIC_MULTI_PCI_SEGMENT
select SOC_AMD_COMMON_BLOCK_DATA_FABRIC_EXTENDED_MMIO
select SOC_AMD_COMMON_BLOCK_HAS_ESPI
+ select SOC_AMD_COMMON_BLOCK_I2C
select SOC_AMD_COMMON_BLOCK_IOMMU
select SOC_AMD_COMMON_BLOCK_LPC
select SOC_AMD_COMMON_BLOCK_MCAX
@@ -43,6 +44,10 @@ config CHIPSET_DEVICETREE
string
default "soc/amd/genoa/chipset.cb"
+config DRIVERS_I2C_DESIGNWARE_CLOCK_MHZ
+ int
+ default 150
+
config EARLY_RESERVED_DRAM_BASE
hex
default 0x7000000
diff --git a/src/soc/amd/genoa/Makefile.inc b/src/soc/amd/genoa/Makefile.inc
index 33a40611ae..4b47886872 100644
--- a/src/soc/amd/genoa/Makefile.inc
+++ b/src/soc/amd/genoa/Makefile.inc
@@ -5,6 +5,7 @@ all-y += mmap_boot.c
all-y += reset.c
all-y += config.c
all-y += gpio.c
+all-y += i2c.c
all-y += uart.c
bootblock-y += early_fch.c
diff --git a/src/soc/amd/genoa/acpi/mmio.asl b/src/soc/amd/genoa/acpi/mmio.asl
index 8ef61a7c19..9b5e1d2d2b 100644
--- a/src/soc/amd/genoa/acpi/mmio.asl
+++ b/src/soc/amd/genoa/acpi/mmio.asl
@@ -195,9 +195,10 @@ Device (I2C0) {
}
}
+ Name (STAT, 0x0)
Method (_STA, 0x0, NotSerialized)
{
- Return (0x0F)
+ Return (STAT)
}
AOAC_DEVICE(FCH_AOAC_DEV_I2C0, 0)
@@ -231,9 +232,10 @@ Device (I2C1) {
}
}
+ Name (STAT, 0x0)
Method (_STA, 0x0, NotSerialized)
{
- Return (0x0F)
+ Return (STAT)
}
AOAC_DEVICE(FCH_AOAC_DEV_I2C1, 0)
@@ -267,9 +269,10 @@ Device (I2C2) {
}
}
+ Name (STAT, 0x0)
Method (_STA, 0x0, NotSerialized)
{
- Return (0x0F)
+ Return (STAT)
}
AOAC_DEVICE(FCH_AOAC_DEV_I2C2, 0)
@@ -303,9 +306,11 @@ Device (I2C3)
Return (Local0)
}
}
+
+ Name (STAT, 0x0)
Method (_STA, 0x0, NotSerialized)
{
- Return (0x0F)
+ Return (STAT)
}
AOAC_DEVICE(FCH_AOAC_DEV_I2C3, 0)
@@ -339,9 +344,11 @@ Device (I2C4)
Return (Local0)
}
}
+
+ Name (STAT, 0x0)
Method (_STA, 0x0, NotSerialized)
{
- Return (0x0F)
+ Return (STAT)
}
AOAC_DEVICE(FCH_AOAC_DEV_I2C4, 0)
@@ -375,9 +382,11 @@ Device (I2C5)
Return (Local0)
}
}
+
+ Name (STAT, 0x0)
Method (_STA, 0x0, NotSerialized)
{
- Return (0x0F)
+ Return (STAT)
}
AOAC_DEVICE(FCH_AOAC_DEV_I2C5, 0)
diff --git a/src/soc/amd/genoa/chip.h b/src/soc/amd/genoa/chip.h
index 9168586228..bca40af070 100644
--- a/src/soc/amd/genoa/chip.h
+++ b/src/soc/amd/genoa/chip.h
@@ -4,9 +4,16 @@
#define __GENOA_CHIP_H__
#include <amdblocks/chip.h>
+#include <amdblocks/i2c.h>
+#include <drivers/i2c/designware/dw_i2c.h>
+#include <soc/iomap.h>
+#include <types.h>
struct soc_amd_genoa_config {
struct soc_amd_common_config common_config;
+
+ u8 i2c_scl_reset;
+ struct dw_i2c_bus_config i2c[I2C_CTRLR_COUNT];
};
#endif
diff --git a/src/soc/amd/genoa/chipset.cb b/src/soc/amd/genoa/chipset.cb
index 58c11561a5..0f543e74c1 100644
--- a/src/soc/amd/genoa/chipset.cb
+++ b/src/soc/amd/genoa/chipset.cb
@@ -207,12 +207,12 @@ chip soc/amd/genoa
end
end
- device mmio 0xfedc2000 alias i2c_0 off end
- device mmio 0xfedc3000 alias i2c_1 off end
- device mmio 0xfedc4000 alias i2c_2 off end
- device mmio 0xfedc5000 alias i2c_3 off end
- device mmio 0xfedc6000 alias i2c_4 off end
- device mmio 0xfedcb000 alias i2c_5 off end
+ device mmio 0xfedc2000 alias i2c_0 off ops soc_amd_i2c_mmio_ops end
+ device mmio 0xfedc3000 alias i2c_1 off ops soc_amd_i2c_mmio_ops end
+ device mmio 0xfedc4000 alias i2c_2 off ops soc_amd_i2c_mmio_ops end
+ device mmio 0xfedc5000 alias i2c_3 off ops soc_amd_i2c_mmio_ops end
+ device mmio 0xfedc6000 alias i2c_4 off ops soc_amd_i2c_mmio_ops end
+ device mmio 0xfedcb000 alias i2c_5 off ops soc_amd_i2c_mmio_ops end
device mmio 0xfedc9000 alias uart_0 off ops amd_uart_mmio_ops end
device mmio 0xfedca000 alias uart_1 off ops amd_uart_mmio_ops end
device mmio 0xfedce000 alias uart_2 off ops amd_uart_mmio_ops end
diff --git a/src/soc/amd/genoa/i2c.c b/src/soc/amd/genoa/i2c.c
new file mode 100644
index 0000000000..76c10498e8
--- /dev/null
+++ b/src/soc/amd/genoa/i2c.c
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <amdblocks/i2c.h>
+#include <console/console.h>
+#include <soc/i2c.h>
+#include <soc/southbridge.h>
+#include "chip.h"
+
+/* Table to switch SCL pins to outputs to initially reset the I2C peripherals */
+static const struct soc_i2c_scl_pin i2c_scl_pins[] = {
+ I2C_RESET_SCL_PIN(I2C0_SCL_PIN, GPIO_I2C0_SCL),
+ I2C_RESET_SCL_PIN(I2C1_SCL_PIN, GPIO_I2C1_SCL),
+ I2C_RESET_SCL_PIN(I2C2_SCL_PIN, GPIO_I2C2_SCL),
+ I2C_RESET_SCL_PIN(I2C3_SCL_PIN, GPIO_I2C3_SCL),
+ I2C_RESET_SCL_PIN(I2C4_SCL_PIN, GPIO_I2C4_SCL),
+ I2C_RESET_SCL_PIN(I2C5_SCL_PIN, GPIO_I2C5_SCL),
+};
+
+static const struct soc_i2c_ctrlr_info i2c_ctrlr[I2C_CTRLR_COUNT] = {
+ { I2C_MASTER_MODE, APU_I2C0_BASE, "I2C0" },
+ { I2C_MASTER_MODE, APU_I2C1_BASE, "I2C1" },
+ { I2C_MASTER_MODE, APU_I2C2_BASE, "I2C2" },
+ { I2C_MASTER_MODE, APU_I2C3_BASE, "I2C3" },
+ { I2C_MASTER_MODE, APU_I2C4_BASE, "I2C4" },
+ { I2C_MASTER_MODE, APU_I2C5_BASE, "I2C5" }
+};
+
+void reset_i2c_peripherals(void)
+{
+ const struct soc_amd_genoa_config *cfg = config_of_soc();
+ struct soc_i2c_peripheral_reset_info reset_info;
+
+ reset_info.i2c_scl_reset_mask = cfg->i2c_scl_reset & GPIO_I2C_MASK;
+ reset_info.i2c_scl = i2c_scl_pins;
+ reset_info.num_pins = ARRAY_SIZE(i2c_scl_pins);
+ sb_reset_i2c_peripherals(&reset_info);
+}
+
+void soc_i2c_misc_init(unsigned int bus, const struct dw_i2c_bus_config *cfg)
+{
+ /* TODO: write I2C pad control registers */
+}
+
+const struct soc_i2c_ctrlr_info *soc_get_i2c_ctrlr_info(size_t *num_ctrlrs)
+{
+ *num_ctrlrs = ARRAY_SIZE(i2c_ctrlr);
+ return i2c_ctrlr;
+}
+
+const struct dw_i2c_bus_config *soc_get_i2c_bus_config(size_t *num_buses)
+{
+ const struct soc_amd_genoa_config *config = config_of_soc();
+
+ *num_buses = ARRAY_SIZE(config->i2c);
+ return config->i2c;
+}
diff --git a/src/soc/amd/genoa/include/soc/i2c.h b/src/soc/amd/genoa/include/soc/i2c.h
new file mode 100644
index 0000000000..ffff754f1b
--- /dev/null
+++ b/src/soc/amd/genoa/include/soc/i2c.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_GENOA_I2C_H
+#define AMD_GENOA_I2C_H
+
+#include <gpio.h>
+#include <types.h>
+
+#define GPIO_I2C0_SCL BIT(0)
+#define GPIO_I2C1_SCL BIT(1)
+#define GPIO_I2C2_SCL BIT(2)
+#define GPIO_I2C3_SCL BIT(3)
+#define GPIO_I2C4_SCL BIT(4)
+#define GPIO_I2C5_SCL BIT(5)
+#define GPIO_I2C_MASK (GPIO_I2C0_SCL | GPIO_I2C1_SCL | \
+ GPIO_I2C2_SCL | GPIO_I2C3_SCL | \
+ GPIO_I2C4_SCL | GPIO_I2C5_SCL)
+
+
+#define I2C0_SCL_PIN GPIO_145
+#define I2C1_SCL_PIN GPIO_147
+#define I2C2_SCL_PIN GPIO_149
+#define I2C3_SCL_PIN GPIO_151
+#define I2C4_SCL_PIN GPIO_13
+#define I2C5_SCL_PIN GPIO_19
+
+#define I2C0_SCL_PIN_IOMUX_GPIOxx GPIO_145_IOMUX_GPIOxx
+#define I2C1_SCL_PIN_IOMUX_GPIOxx GPIO_147_IOMUX_GPIOxx
+#define I2C2_SCL_PIN_IOMUX_GPIOxx GPIO_149_IOMUX_GPIOxx
+#define I2C3_SCL_PIN_IOMUX_GPIOxx GPIO_151_IOMUX_GPIOxx
+#define I2C4_SCL_PIN_IOMUX_GPIOxx GPIO_13_IOMUX_GPIOxx
+#define I2C5_SCL_PIN_IOMUX_GPIOxx GPIO_19_IOMUX_GPIOxx
+
+void reset_i2c_peripherals(void);
+
+#endif /* AMD_GENOA_I2C_H */
diff --git a/src/soc/amd/genoa/include/soc/iomap.h b/src/soc/amd/genoa/include/soc/iomap.h
index 5b767e3e27..0e24780a0f 100644
--- a/src/soc/amd/genoa/include/soc/iomap.h
+++ b/src/soc/amd/genoa/include/soc/iomap.h
@@ -3,6 +3,10 @@
#ifndef AMD_GENOA_IOMAP_H
#define AMD_GENOA_IOMAP_H
+#define I2C_MASTER_DEV_COUNT 6
+#define I2C_PERIPHERAL_DEV_COUNT 0
+#define I2C_CTRLR_COUNT (I2C_MASTER_DEV_COUNT + I2C_PERIPHERAL_DEV_COUNT)
+
#define SPI_BASE_ADDRESS 0xfec10000
/* @Todo : Check these values for Genoa */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 22:47:34 +0000