[rtems commit] bsps/zynqmp: Added I2C support for ZynqMP
Joel Sherrill
joel at rtems.org
Thu Sep 9 19:18:28 UTC 2021
Module: rtems
Branch: master
Commit: 7792ab88ca300b167a6b64f48afc039da88f4d93
Changeset: http://git.rtems.org/rtems/commit/?id=7792ab88ca300b167a6b64f48afc039da88f4d93
Author: Stephen Clark <stephen.clark at oarcorp.com>
Date: Mon Aug 23 12:58:47 2021 -0500
bsps/zynqmp: Added I2C support for ZynqMP
Added I2C drivers for ZynqMP and updated build system accordingly.
---
bsps/aarch64/xilinx-zynqmp/include/bsp.h | 4 ++
bsps/aarch64/xilinx-zynqmp/include/bsp/i2c.h | 64 ++++++++++++++++++++++
bsps/aarch64/xilinx-zynqmp/include/bsp/irq.h | 2 +
bsps/aarch64/xilinx-zynqmp/start/bspstart.c | 10 ++++
spec/build/bsps/aarch64/xilinx-zynqmp/grp.yml | 4 ++
.../build/bsps/aarch64/xilinx-zynqmp/grp_zu3eg.yml | 2 +
.../bsps/aarch64/xilinx-zynqmp/objcadencei2c.yml | 19 +++++++
.../bsps/aarch64/xilinx-zynqmp/optclki2c0.yml | 31 +++++++++++
.../bsps/aarch64/xilinx-zynqmp/optclki2c1.yml | 31 +++++++++++
9 files changed, 167 insertions(+)
diff --git a/bsps/aarch64/xilinx-zynqmp/include/bsp.h b/bsps/aarch64/xilinx-zynqmp/include/bsp.h
index 83f2e2f..6d49b9a 100644
--- a/bsps/aarch64/xilinx-zynqmp/include/bsp.h
+++ b/bsps/aarch64/xilinx-zynqmp/include/bsp.h
@@ -70,6 +70,10 @@ BSP_START_TEXT_SECTION void zynqmp_setup_mmu_and_cache(void);
void zynqmp_debug_console_flush(void);
+uint32_t zynqmp_clock_i2c0(void);
+
+uint32_t zynqmp_clock_i2c1(void);
+
#ifdef __cplusplus
}
#endif /* __cplusplus */
diff --git a/bsps/aarch64/xilinx-zynqmp/include/bsp/i2c.h b/bsps/aarch64/xilinx-zynqmp/include/bsp/i2c.h
new file mode 100644
index 0000000..a83d9ed
--- /dev/null
+++ b/bsps/aarch64/xilinx-zynqmp/include/bsp/i2c.h
@@ -0,0 +1,64 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (C) 2021 On-Line Applications Research (OAR)
+ * Copyright (C) 2014 embedded brains GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LIBBSP_ARM_XILINX_ZYNQ_I2C_H
+#define LIBBSP_ARM_XILINX_ZYNQ_I2C_H
+
+#include <dev/i2c/cadence-i2c.h>
+#include <bsp/irq.h>
+#include <bsp.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+static inline int zynqmp_register_i2c_0(void)
+{
+ return i2c_bus_register_cadence(
+ "/dev/i2c-0",
+ 0x00FF020000,
+ zynqmp_clock_i2c0(),
+ ZYNQMP_IRQ_I2C_0
+ );
+}
+
+static inline int zynqmp_register_i2c_1(void)
+{
+ return i2c_bus_register_cadence(
+ "/dev/i2c-1",
+ 0x00FF030000,
+ zynqmp_clock_i2c1(),
+ ZYNQMP_IRQ_I2C_1
+ );
+}
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBBSP_ARM_XILINX_ZYNQ_I2C_H */
diff --git a/bsps/aarch64/xilinx-zynqmp/include/bsp/irq.h b/bsps/aarch64/xilinx-zynqmp/include/bsp/irq.h
index b67d7d0..9af4164 100644
--- a/bsps/aarch64/xilinx-zynqmp/include/bsp/irq.h
+++ b/bsps/aarch64/xilinx-zynqmp/include/bsp/irq.h
@@ -53,6 +53,8 @@ extern "C" {
/* Interrupts vectors */
#define BSP_TIMER_VIRT_PPI 27
#define BSP_TIMER_PHYS_NS_PPI 30
+#define ZYNQMP_IRQ_I2C_0 49
+#define ZYNQMP_IRQ_I2C_1 50
#define ZYNQMP_IRQ_UART_0 54
#define ZYNQMP_IRQ_UART_1 53
#define ZYNQMP_IRQ_ETHERNET_0 89
diff --git a/bsps/aarch64/xilinx-zynqmp/start/bspstart.c b/bsps/aarch64/xilinx-zynqmp/start/bspstart.c
index 36194a3..d75e5a1 100644
--- a/bsps/aarch64/xilinx-zynqmp/start/bspstart.c
+++ b/bsps/aarch64/xilinx-zynqmp/start/bspstart.c
@@ -39,6 +39,16 @@
#include <bsp/irq-generic.h>
#include <bsp/linker-symbols.h>
+__attribute__ ((weak)) uint32_t zynqmp_clock_i2c0(void)
+{
+ return ZYNQMP_CLOCK_I2C0;
+}
+
+__attribute__ ((weak)) uint32_t zynqmp_clock_i2c1(void)
+{
+ return ZYNQMP_CLOCK_I2C1;
+}
+
void bsp_start( void )
{
bsp_interrupt_initialize();
diff --git a/spec/build/bsps/aarch64/xilinx-zynqmp/grp.yml b/spec/build/bsps/aarch64/xilinx-zynqmp/grp.yml
index 03ccdbb..1a35690 100644
--- a/spec/build/bsps/aarch64/xilinx-zynqmp/grp.yml
+++ b/spec/build/bsps/aarch64/xilinx-zynqmp/grp.yml
@@ -28,6 +28,10 @@ links:
- role: build-dependency
uid: optramori
- role: build-dependency
+ uid: optclki2c0
+- role: build-dependency
+ uid: optclki2c1
+- role: build-dependency
uid: optclkuart
- role: build-dependency
uid: ../../optconminor
diff --git a/spec/build/bsps/aarch64/xilinx-zynqmp/grp_zu3eg.yml b/spec/build/bsps/aarch64/xilinx-zynqmp/grp_zu3eg.yml
index fa6347b..4727ebd 100644
--- a/spec/build/bsps/aarch64/xilinx-zynqmp/grp_zu3eg.yml
+++ b/spec/build/bsps/aarch64/xilinx-zynqmp/grp_zu3eg.yml
@@ -11,6 +11,8 @@ links:
uid: grp
- role: build-dependency
uid: tstzu3eg
+- role : build-dependency
+ uid: objcadencei2c
type: build
use-after: []
use-before: []
diff --git a/spec/build/bsps/aarch64/xilinx-zynqmp/objcadencei2c.yml b/spec/build/bsps/aarch64/xilinx-zynqmp/objcadencei2c.yml
new file mode 100644
index 0000000..fd9d51d
--- /dev/null
+++ b/spec/build/bsps/aarch64/xilinx-zynqmp/objcadencei2c.yml
@@ -0,0 +1,19 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+build-type: objects
+cflags: []
+copyrights:
+- Copyright (C) 2021 On-Line Applications Research (OAR)
+cppflags: []
+cxxflags: []
+enabled-by: true
+includes: []
+install:
+- destination: ${BSP_INCLUDEDIR}/bsp
+ source:
+ - bsps/include/dev/i2c/cadence-i2c-regs.h
+ - bsps/include/dev/i2c/cadence-i2c.h
+ - bsps/aarch64/xilinx-zynqmp/include/bsp/i2c.h
+links: []
+source:
+- bsps/shared/dev/i2c/cadence-i2c.c
+type: build
diff --git a/spec/build/bsps/aarch64/xilinx-zynqmp/optclki2c0.yml b/spec/build/bsps/aarch64/xilinx-zynqmp/optclki2c0.yml
new file mode 100644
index 0000000..f44382c
--- /dev/null
+++ b/spec/build/bsps/aarch64/xilinx-zynqmp/optclki2c0.yml
@@ -0,0 +1,31 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+actions:
+- get-integer: null
+- define: null
+build-type: option
+copyrights: |
+ Copyright (C) 2021 On-Line Applications Research (OAR)
+ Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
+default: 111111111
+default-by-family: []
+default-by-variant:
+- value: 111111111
+ variants:
+ - aarch64/xilinx_zynqmp_ilp32_qemu.*
+- value: 111111111
+ variants:
+ - aarch64/xilinx_zynqmp_ilp32_zu3eg.*
+- value: 111111111
+ variants:
+ - aarch64/xilinx_zynqmp_lp64_qemu.*
+- value: 111111111
+ variants:
+ - aarch64/xilinx_zynqmp_lp64_zu3eg.*
+description: |
+ ZynqMP i2c0 clock frequency in Hz. This is the frequency after the signal
+ has been processed using the values passed to the I2C0_REF_CTRL register.
+enabled-by: true
+format: '{}'
+links: []
+name: ZYNQMP_CLOCK_I2C0
+type: build
diff --git a/spec/build/bsps/aarch64/xilinx-zynqmp/optclki2c1.yml b/spec/build/bsps/aarch64/xilinx-zynqmp/optclki2c1.yml
new file mode 100644
index 0000000..0431a7f
--- /dev/null
+++ b/spec/build/bsps/aarch64/xilinx-zynqmp/optclki2c1.yml
@@ -0,0 +1,31 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+actions:
+- get-integer: null
+- define: null
+build-type: option
+copyrights: |
+ Copyright (C) 2021 On-Line Applications Research (OAR)
+ Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
+default: 111111111
+default-by-family: []
+default-by-variant:
+- value: 111111111
+ variants:
+ - aarch64/xilinx_zynqmp_ilp32_qemu.*
+- value: 111111111
+ variants:
+ - aarch64/xilinx_zynqmp_ilp32_zu3eg.*
+- value: 111111111
+ variants:
+ - aarch64/xilinx_zynqmp_lp64_qemu.*
+- value: 111111111
+ variants:
+ - aarch64/xilinx_zynqmp_lp64_zu3eg.*
+description: |
+ ZynqMP i2c1 clock frequency in Hz. This is the frequency after the signal
+ has been processed using the values passed to the I2C1_REF_CTRL register.
+enabled-by: true
+format: '{}'
+links: []
+name: ZYNQMP_CLOCK_I2C1
+type: build
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