[rtems commit] bsps/imx: Enable clock of ETH2
Christian Mauderer
christianm at rtems.org
Thu Jun 9 06:59:01 UTC 2022
Module: rtems
Branch: master
Commit: 7ba15036616b84f69b98ba7c4af96e411263c1e2
Changeset: http://git.rtems.org/rtems/commit/?id=7ba15036616b84f69b98ba7c4af96e411263c1e2
Author: Christian Mauderer <christian.mauderer at embedded-brains.de>
Date: Fri May 20 14:56:06 2022 +0200
bsps/imx: Enable clock of ETH2
---
.../imx/include/arm/freescale/imx/imx6ul_ccmreg.h | 152 +++++++++++++++++++++
bsps/arm/imx/start/bspstart.c | 20 +++
spec/build/bsps/arm/imx/bspimx.yml | 1 +
3 files changed, 173 insertions(+)
diff --git a/bsps/arm/imx/include/arm/freescale/imx/imx6ul_ccmreg.h b/bsps/arm/imx/include/arm/freescale/imx/imx6ul_ccmreg.h
new file mode 100644
index 0000000000..e4b597ba32
--- /dev/null
+++ b/bsps/arm/imx/include/arm/freescale/imx/imx6ul_ccmreg.h
@@ -0,0 +1,152 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/*
+ * Copyright (C) 2022 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 IMX6UL_CCMREG_H
+#define IMX6UL_CCMREG_H
+
+#include <bsp/utility.h>
+
+typedef struct {
+ uint32_t ccr;
+ uint32_t ccdr;
+ uint32_t csr;
+ uint32_t ccsr;
+ uint32_t cacrr;
+ uint32_t cbcdr;
+ uint32_t cbcmr;
+ uint32_t cscmr1;
+ uint32_t cscmr2;
+ uint32_t cscdr1;
+ uint32_t cs1cdr;
+ uint32_t cs2cdr;
+ uint32_t cdcdr;
+ uint32_t chsccdr;
+ uint32_t cscdr2;
+ uint32_t cscdr3;
+ uint32_t reserved_40[2];
+ uint32_t cdhipr;
+ uint32_t reserved_4c[2];
+ uint32_t clpcr;
+ uint32_t cisr;
+ uint32_t cimr;
+ uint32_t ccosr;
+ uint32_t cgpr;
+ uint32_t ccgr0;
+ uint32_t ccgr1;
+ uint32_t ccgr2;
+ uint32_t ccgr3;
+ uint32_t ccgr4;
+ uint32_t ccgr5;
+ uint32_t ccgr6;
+ uint32_t reserved_84[1];
+ uint32_t cmeor;
+} imx6ul_ccm;
+
+typedef struct {
+ uint32_t pll_arm;
+ uint32_t pll_arm_set;
+ uint32_t pll_arm_clr;
+ uint32_t pll_arm_tog;
+ uint32_t pll_usb1;
+ uint32_t pll_usb1_set;
+ uint32_t pll_usb1_clr;
+ uint32_t pll_usb1_tog;
+ uint32_t pll_usb2;
+ uint32_t pll_usb2_set;
+ uint32_t pll_usb2_clr;
+ uint32_t pll_usb2_tog;
+ uint32_t pll_sys;
+ uint32_t pll_sys_set;
+ uint32_t pll_sys_clr;
+ uint32_t pll_sys_tog;
+ uint32_t pll_sys_ss;
+ uint32_t reserved_44[3];
+ uint32_t pll_sys_num;
+ uint32_t reserved_54[3];
+ uint32_t pll_sys_denom;
+ uint32_t reserved_64[3];
+ uint32_t pll_audio;
+ uint32_t pll_audio_set;
+ uint32_t pll_audio_clr;
+ uint32_t pll_audio_tog;
+ uint32_t pll_audio_num;
+ uint32_t reserved_84[3];
+ uint32_t pll_audio_denom;
+ uint32_t reserved_94[3];
+ uint32_t pll_video;
+ uint32_t pll_video_set;
+ uint32_t pll_video_clr;
+ uint32_t pll_video_tog;
+ uint32_t pll_video_num;
+ uint32_t reserved_b4[3];
+ uint32_t pll_video_denom;
+ uint32_t reserved_c4[7];
+ uint32_t pll_enet;
+#define IMX6UL_CCM_ANALOG_PLL_ENET_LOCK BSP_BIT32(31)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENET_25M_REF_EN BSP_BIT32(21)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENET2_125M_EN BSP_BIT32(20)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENABLE_125M BSP_BIT32(19)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_PFD_OFFSET_EN BSP_BIT32(18)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_BYPASS BSP_BIT32(16)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_BYPASS_CLK_SRC(val) BSP_FLD32(val, 14, 15)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_BYPASS_CLK_SRC_GET(val) BSP_FLD32GET(val, 14, 15)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_BYPASS_CLK_SRC_SET(val) BSP_FLD32SET(val, 14, 15)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENET1_125M_EN BSP_BIT32(13)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_POWERDOWN BSP_BIT32(12)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENET1_DIV_SELECT(val) BSP_FLD32(val, 3, 2)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENET1_DIV_SELECT_GET(val) BSP_FLD32GET(val, 3, 2)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENET1_DIV_SELECT_SET(val) BSP_FLD32SET(val, 3, 2)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENET0_DIV_SELECT(val) BSP_FLD32(val, 0, 1)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENET0_DIV_SELECT_GET(val) BSP_FLD32GET(val, 0, 1)
+#define IMX6UL_CCM_ANALOG_PLL_ENET_ENET0_DIV_SELECT_SET(val) BSP_FLD32SET(val, 0, 1)
+ uint32_t pll_enet_set;
+ uint32_t pll_enet_clr;
+ uint32_t pll_enet_tog;
+ uint32_t pfd_480;
+ uint32_t pfd_480_set;
+ uint32_t pfd_480_clr;
+ uint32_t pfd_480_tog;
+ uint32_t pfd_528;
+ uint32_t pfd_528_set;
+ uint32_t pfd_528_clr;
+ uint32_t pfd_528_tog;
+ uint32_t reserved_110[16];
+ uint32_t misc0;
+ uint32_t misc0_set;
+ uint32_t misc0_clr;
+ uint32_t misc0_tog;
+ uint32_t misc1;
+ uint32_t misc1_set;
+ uint32_t misc1_clr;
+ uint32_t misc1_tog;
+ uint32_t misc2;
+ uint32_t misc2_set;
+ uint32_t misc2_clr;
+ uint32_t misc2_tog;
+} imx6ul_ccm_analog;
+
+#endif /* IMX6UL_CCMREG_H */
diff --git a/bsps/arm/imx/start/bspstart.c b/bsps/arm/imx/start/bspstart.c
index 04d48d1558..552935ee69 100644
--- a/bsps/arm/imx/start/bspstart.c
+++ b/bsps/arm/imx/start/bspstart.c
@@ -14,6 +14,7 @@
#include <bsp/linker-symbols.h>
#include <dev/clock/arm-generic-timer.h>
#include <libcpu/arm-cp15.h>
+#include <arm/freescale/imx/imx6ul_ccmreg.h>
#include <libfdt.h>
@@ -161,6 +162,24 @@ static void imx_find_gic(const void *fdt)
#endif
}
+static void imx_ccm_enable_eth2_clk(void)
+{
+ const void *fdt = bsp_fdt_get();
+
+ if (imx_is_imx6(fdt)) {
+ int node;
+ volatile imx6ul_ccm_analog *ccm_analog = NULL;
+
+ node = fdt_node_offset_by_compatible(fdt, -1, "fsl,imx6ul-anatop");
+ if (node >= 0) {
+ ccm_analog = imx_get_reg_of_node(fdt, node);
+ }
+ if (ccm_analog != NULL) {
+ ccm_analog->pll_enet_set = IMX6UL_CCM_ANALOG_PLL_ENET_ENET2_125M_EN;
+ }
+ }
+}
+
void bsp_start(void)
{
imx_find_gic(bsp_fdt_get());
@@ -169,4 +188,5 @@ void bsp_start(void)
bsp_section_nocacheheap_begin,
(uintptr_t) bsp_section_nocacheheap_size
);
+ imx_ccm_enable_eth2_clk();
}
diff --git a/spec/build/bsps/arm/imx/bspimx.yml b/spec/build/bsps/arm/imx/bspimx.yml
index 24e56a499f..6ff2093f7e 100644
--- a/spec/build/bsps/arm/imx/bspimx.yml
+++ b/spec/build/bsps/arm/imx/bspimx.yml
@@ -23,6 +23,7 @@ install:
- bsps/arm/imx/include/arm/freescale/imx/imx_srcreg.h
- bsps/arm/imx/include/arm/freescale/imx/imx_uartreg.h
- bsps/arm/imx/include/arm/freescale/imx/imx_wdogreg.h
+ - bsps/arm/imx/include/arm/freescale/imx/imx6ul_ccmreg.h
- bsps/arm/include/arm/freescale/imx/imx_iomuxreg.h
- bsps/arm/include/arm/freescale/imx/imx_iomuxvar.h
- destination: ${BSP_INCLUDEDIR}/bsp
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