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authorTero Kristo <t-kristo@ti.com>2019-09-27 19:14:27 +0300
committerTom Rini <trini@konsulko.com>2019-10-11 13:32:39 -0400
commite8e683d33b0ccd43e03809bf4ea88a899a867473 (patch)
treebd20a18c5e10430a1d22d21cb49b09279bc0909c
parent260777fc2333183728d24fb0ffaa22a888c09655 (diff)
board: ti: am57xx-idk: Configure the CDCE913 clock synthesizer
AM57xx-IDK boards contain the CDCE913 clock synthesizer, and their reset crystal capacitance load value of 10pF is wrong leading into lost packets in certain networking tests. Add DT data for this device, and probe it from the board file to program the crystal capacitance load value to 0pF to avoid any problems. Signed-off-by: Tero Kristo <t-kristo@ti.com>
-rw-r--r--arch/arm/dts/am571x-idk-u-boot.dtsi5
-rw-r--r--arch/arm/dts/am572x-idk-u-boot.dtsi5
-rw-r--r--arch/arm/dts/am574x-idk-u-boot.dtsi5
-rw-r--r--arch/arm/dts/am57xx-idk-common-u-boot.dtsi23
-rw-r--r--board/ti/am57xx/board.c5
-rw-r--r--configs/am57xx_evm_defconfig2
6 files changed, 45 insertions, 0 deletions
diff --git a/arch/arm/dts/am571x-idk-u-boot.dtsi b/arch/arm/dts/am571x-idk-u-boot.dtsi
new file mode 100644
index 0000000000..65199200ed
--- /dev/null
+++ b/arch/arm/dts/am571x-idk-u-boot.dtsi
@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#include "am57xx-idk-common-u-boot.dtsi"
diff --git a/arch/arm/dts/am572x-idk-u-boot.dtsi b/arch/arm/dts/am572x-idk-u-boot.dtsi
new file mode 100644
index 0000000000..65199200ed
--- /dev/null
+++ b/arch/arm/dts/am572x-idk-u-boot.dtsi
@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#include "am57xx-idk-common-u-boot.dtsi"
diff --git a/arch/arm/dts/am574x-idk-u-boot.dtsi b/arch/arm/dts/am574x-idk-u-boot.dtsi
new file mode 100644
index 0000000000..65199200ed
--- /dev/null
+++ b/arch/arm/dts/am574x-idk-u-boot.dtsi
@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#include "am57xx-idk-common-u-boot.dtsi"
diff --git a/arch/arm/dts/am57xx-idk-common-u-boot.dtsi b/arch/arm/dts/am57xx-idk-common-u-boot.dtsi
new file mode 100644
index 0000000000..b07aea0048
--- /dev/null
+++ b/arch/arm/dts/am57xx-idk-common-u-boot.dtsi
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#include "omap5-u-boot.dtsi"
+
+/ {
+ xtal25mhz: xtal25mhz {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <25000000>;
+ };
+};
+
+&i2c1 {
+ cdce913: cdce913@65 {
+ compatible = "ti,cdce913";
+ reg = <0x65>;
+ clocks = <&xtal25mhz>;
+ #clock-cells = <1>;
+ xtal-load-pf = <0>;
+ };
+};
diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index f78e6c2e1f..237a834c53 100644
--- a/board/ti/am57xx/board.c
+++ b/board/ti/am57xx/board.c
@@ -30,6 +30,7 @@
#include <dwc3-omap-uboot.h>
#include <ti-usb-phy-uboot.h>
#include <mmc.h>
+#include <dm/uclass.h>
#include "../common/board_detect.h"
#include "mux_data.h"
@@ -689,6 +690,7 @@ int board_late_init(void)
{
setup_board_eeprom_env();
u8 val;
+ struct udevice *dev;
/*
* DEV_CTRL.DEV_ON = 1 please - else palmas switches off in 8 seconds
@@ -720,6 +722,9 @@ int board_late_init(void)
am57x_idk_lcd_detect();
+ /* Just probe the potentially supported cdce913 device */
+ uclass_get_device(UCLASS_CLK, 0, &dev);
+
#if !defined(CONFIG_SPL_BUILD)
board_ti_set_ethaddr(2);
#endif
diff --git a/configs/am57xx_evm_defconfig b/configs/am57xx_evm_defconfig
index 3b613e135c..e2f558cde7 100644
--- a/configs/am57xx_evm_defconfig
+++ b/configs/am57xx_evm_defconfig
@@ -98,3 +98,5 @@ CONFIG_USB_GADGET=y
CONFIG_USB_GADGET_MANUFACTURER="Texas Instruments"
CONFIG_USB_GADGET_VENDOR_NUM=0x0451
CONFIG_USB_GADGET_PRODUCT_NUM=0xd022
+CONFIG_CLK=y
+CONFIG_CLK_CDCE9XX=y