[PATCH 5/5] at91sam9263ek: enable devicetree
Sam Ravnborg
sam at ravnborg.org
Wed Dec 27 13:18:39 PST 2017
Following is tested and works with DT:
- GPIO LEDs
- GPIO buttons
- UART
- nand probe
- macb probe
- SD card (mci1)
- network
- loading environment
- loading kernel
Following is not tested:
- i2c
- USB
Changes:
- Added of_init.c, simpler than using ifdefs in the existing init.c
- Selected relevant symbols in Kconfig to enable use of DT
- Added additional commands (used for debugging)
- iomem, clk*
- Extended DT with:
- environment,barebox, to tell where to find the enviroment
The log below shows:
- barebox-environment environment.6: probe failed: No such device
Likely something with setup od NAND
But not something that has been looked into
barebox 2017.12.0-00033-g0c8627b65 #6 Wed Dec 27 21:14:40 CET 2017
Board: Atmel at91sam9263ek
gpio-at91 fffff200.gpio: AT91 gpio driver registered
gpio-at91 fffff400.gpio: AT91 gpio driver registered
gpio-at91 fffff600.gpio: AT91 gpio driver registered
gpio-at91 fffff800.gpio: AT91 gpio driver registered
gpio-at91 fffffa00.gpio: AT91 gpio driver registered
pinctrl-at91 pinctrl.2: AT91 pinctrl registered
initcall 0x23e44540 failed: error -1073741823
AT91: Detected soc type: at91sam9263
AT91: Detected soc subtype: Unknown
mdio_bus: miibus0: probed
macb fffbc000.ethernet: Cadence MACB at 0xfffbc000
at91_udc fff78000.gadget: at91_udc version 3 May 2006
atmel_mci fff84000.mmc: version: 0x210
atmel_mci fff84000.mmc: registered as fff84000.mmc
malloc space: 0x239facc0 -> 0x23dfacbf (size 4 MiB)
barebox-environment environment.6: probe failed: No such device
environment load /dev/env0: No such file or directory
Maybe you have to create the partition.
running /env/bin/init...
No USB Device cable plugged, normal boot
\e[?25h
Hit any key to stop autoboot: 2
barebox at Atmel at91sam9263ek:/ iomem
0x00000000 - 0xffffffff (size 0x00000000) iomem
0x00300000 - 0x00313fff (size 0x00014000) 300000.sram
0x00500000 - 0x00503fff (size 0x00004000) 500000.sram
0x00700000 - 0x00700fff (size 0x00001000) 700000.fb
0x20000000 - 0x23ffffff (size 0x04000000) ram0
0x239facc0 - 0x23dfacbf (size 0x00400000) malloc space
0x23dfacc0 - 0x23dfffef (size 0x00005330) board data
0x23e00000 - 0x23e54008 (size 0x00054009) barebox
0x23e54009 - 0x23e64cf7 (size 0x00010cef) barebox data
0x23e64cf8 - 0x23e681f7 (size 0x00003500) bss
0x23fe4000 - 0x23fe7fff (size 0x00004000) ttb
0x23fe8000 - 0x23feffff (size 0x00008000) stack
0xfff78000 - 0xfff7bfff (size 0x00004000) fff78000.gadget
0xfff84000 - 0xfff845ff (size 0x00000600) fff84000.mmc
0xfff8c000 - 0xfff8c1ff (size 0x00000200) fff8c000.serial
0xfffbc000 - 0xfffbc0ff (size 0x00000100) fffbc000.ethernet
0xffffe400 - 0xffffe5ff (size 0x00000200) at91sam9-smc0
0xffffea00 - 0xffffebff (size 0x00000200) at91sam9-smc1
0xffffee00 - 0xffffefff (size 0x00000200) ffffee00.serial
0xfffff200 - 0xfffff3ff (size 0x00000200) fffff200.gpio
0xfffff400 - 0xfffff5ff (size 0x00000200) fffff400.gpio
0xfffff600 - 0xfffff7ff (size 0x00000200) fffff600.gpio
0xfffff800 - 0xfffff9ff (size 0x00000200) fffff800.gpio
0xfffffa00 - 0xfffffbff (size 0x00000200) fffffa00.gpio
0xfffffd30 - 0xfffffd3e (size 0x0000000f) fffffd30.timer
barebox at Atmel at91sam9263ek:/ clk_dump
slow_xtal (rate 32768, enabled)
prog0 (rate 32768, enabled)
pck0 (rate 32768, disabled)
prog1 (rate 32768, enabled)
pck1 (rate 32768, disabled)
prog2 (rate 32768, enabled)
pck2 (rate 32768, disabled)
prog3 (rate 32768, enabled)
pck3 (rate 32768, disabled)
main_xtal (rate 16367660, enabled)
main_osc (rate 16367660, enabled)
mainck (rate 16367660, enabled)
pllbck (rate 98205960, enabled)
usbck (rate 49102980, enabled)
uhpck (rate 49102980, disabled)
udpck (rate 49102980, disabled)
pllack (rate 204595750, enabled)
masterck (rate 102297875, enabled)
pioA_clk (rate 102297875, enabled)
pioB_clk (rate 102297875, enabled)
pioCDE_clk (rate 102297875, enabled)
usart0_clk (rate 102297875, enabled)
usart1_clk (rate 102297875, disabled)
usart2_clk (rate 102297875, disabled)
mci0_clk (rate 102297875, disabled)
mci1_clk (rate 102297875, disabled)
can_clk (rate 102297875, disabled)
twi0_clk (rate 102297875, disabled)
spi0_clk (rate 102297875, disabled)
spi1_clk (rate 102297875, disabled)
ssc0_clk (rate 102297875, disabled)
ssc1_clk (rate 102297875, disabled)
ac97_clk (rate 102297875, disabled)
tcb_clk (rate 102297875, disabled)
pwm_clk (rate 102297875, disabled)
macb0_clk (rate 102297875, enabled)
g2de_clk (rate 102297875, disabled)
udc_clk (rate 102297875, disabled)
isi_clk (rate 102297875, disabled)
lcd_clk (rate 102297875, enabled)
dma_clk (rate 102297875, disabled)
ohci_clk (rate 102297875, disabled)
barebox at Atmel at91sam9263ek:/ devinfo
`-- global
`-- nv
`-- platform
`-- mem0
`-- 0x00000000-0x03ffffff ( 64 MiB): /dev/ram0
`-- 300000.sram
`-- 0x00000000-0x00013fff ( 80 KiB): /dev/sram0
`-- 500000.sram
`-- 0x00000000-0x00003fff ( 16 KiB): /dev/sram1
`-- ahb.0
`-- apb.1
`-- fffff000.interrupt-controller
`-- fffffc00.pmc
`-- ffffe200.ramc
`-- ffffe400.smc
`-- ffffe800.ramc
`-- ffffea00.smc
`-- ffffec00.matrix
`-- fffffd30.timer
`-- fff7c000.timer
`-- fffffd00.rstc
`-- fffffd10.shdwc
`-- pinctrl.2
`-- fffff200.gpio
`-- fffff400.gpio
`-- fffff600.gpio
`-- fffff800.gpio
`-- fffffa00.gpio
`-- ffffee00.serial
`-- cs0
`-- 0x00000000-0xffffffffffffffff ( 0 Bytes): /dev/cs0
`-- fff8c000.serial
`-- cs1
`-- 0x00000000-0xffffffffffffffff ( 0 Bytes): /dev/cs1
`-- fffbc000.ethernet
`-- miibus0
`-- eth0
`-- fff78000.gadget
`-- usbgadget
`-- fff84000.mmc
`-- mci0
`-- fffffd40.watchdog
`-- fffa4000.spi
`-- fffac000.can
`-- 700000.fb
`-- a00000.ohci
`-- 10000000.ebi
`-- i2c-gpio-0.3
`-- leds.4
`-- gpio_keys.5
`-- at91sam9-smc0
`-- at91sam9-smc1
`-- cs2
`-- 0x00000000-0xffffffffffffffff ( 0 Bytes): /dev/cs2
`-- soc
`-- mem1
`-- 0x00000000-0xfffffffe ( 4 GiB): /dev/mem
`-- environment.6
`-- mdio_bus
`-- fs
`-- ramfs0
`-- devfs0
`-- net
`-- udc0
`-- fb0
`-- 0x00000000-0x000257ff ( 150 KiB): /dev/fb0
Signed-off-by: Sam Ravnborg <sam at ravnborg.org>
---
arch/arm/boards/at91sam9263ek/Makefile | 5 ++
arch/arm/boards/at91sam9263ek/of_init.c | 98 ++++++++++++++++++++++++++++++++
arch/arm/configs/at91sam9263ek_defconfig | 6 ++
arch/arm/dts/at91sam9263ek.dts | 6 ++
arch/arm/mach-at91/Kconfig | 3 +
arch/arm/mach-at91/at91sam9263.c | 8 +++
6 files changed, 126 insertions(+)
create mode 100644 arch/arm/boards/at91sam9263ek/of_init.c
diff --git a/arch/arm/boards/at91sam9263ek/Makefile b/arch/arm/boards/at91sam9263ek/Makefile
index de4d75690..85b6ba0a5 100644
--- a/arch/arm/boards/at91sam9263ek/Makefile
+++ b/arch/arm/boards/at91sam9263ek/Makefile
@@ -1,4 +1,9 @@
+
+ifeq ($(CONFIG_OFDEVICE),)
obj-y += init.o
+else
+obj-y += of_init.o
+endif
lwl-y += lowlevel_init.o
bbenv-$(CONFIG_DEFAULT_ENVIRONMENT_GENERIC) += defaultenv-at91sam9263ek
diff --git a/arch/arm/boards/at91sam9263ek/of_init.c b/arch/arm/boards/at91sam9263ek/of_init.c
new file mode 100644
index 000000000..155659124
--- /dev/null
+++ b/arch/arm/boards/at91sam9263ek/of_init.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2017 Sam Ravnborg <sam at ravnborg.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <common.h>
+#include <envfs.h>
+#include <init.h>
+#include <gpio.h>
+
+#include <mach/at91sam9263_matrix.h>
+#include <mach/at91sam9_smc.h>
+#include <mach/hardware.h>
+#include <mach/iomux.h>
+#include <mach/io.h>
+
+static int check_fdt(void)
+{
+ return of_machine_is_compatible("atmel,at91sam9263ek");
+}
+postcore_initcall(check_fdt);
+
+static struct sam9_smc_config ek_nand_smc_config = {
+ .ncs_read_setup = 0,
+ .nrd_setup = 1,
+ .ncs_write_setup = 0,
+ .nwe_setup = 1,
+
+ .ncs_read_pulse = 3,
+ .nrd_pulse = 3,
+ .ncs_write_pulse = 3,
+ .nwe_pulse = 3,
+
+ .read_cycle = 5,
+ .write_cycle = 5,
+
+ .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
+ .tdf_cycles = 2,
+};
+
+/*
+ * Initialize of SMC must come after we
+ * probe the at91sam9_smc_driver.
+ * But is required before we start the other drives.
+ * Use fs_initcall() to maintain this order.
+ */
+static int at91sam9263_smc_init(void)
+{
+ unsigned long csa;
+
+ /* setup bus-width (8 or 16) */
+#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
+ ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
+#else
+ ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
+#endif
+
+ csa = at91_sys_read(AT91_MATRIX_EBI0CSA);
+ csa |= AT91_MATRIX_EBI0_CS3A_SMC_SMARTMEDIA;
+ at91_sys_write(AT91_MATRIX_EBI0CSA, csa);
+
+ /* configure chip-select 3 (NAND) */
+ sam9_smc_configure(0, 3, &ek_nand_smc_config);
+
+ return 0;
+}
+fs_initcall(at91sam9263_smc_init);
+
+static int at91sam9263ek_phy_init(void)
+{
+ /*
+ * PB27 enables the 50MHz oscillator for Ethernet PHY
+ * 1 - enable
+ * 0 - disable
+ */
+ at91_set_gpio_output(AT91_PIN_PB27, 1);
+ gpio_set_value(AT91_PIN_PB27, 1); /* 1- enable, 0 - disable */
+ return 0;
+}
+device_initcall(at91sam9263ek_phy_init);
+
+static int at91sam9263ek_env_init(void)
+{
+ if (IS_ENABLED(CONFIG_DEFAULT_ENVIRONMENT_GENERIC))
+ defaultenv_append_directory(defaultenv_at91sam9263ek);
+
+ return 0;
+}
+late_initcall(at91sam9263ek_env_init);
diff --git a/arch/arm/configs/at91sam9263ek_defconfig b/arch/arm/configs/at91sam9263ek_defconfig
index fc92615eb..e8ad841fa 100644
--- a/arch/arm/configs/at91sam9263ek_defconfig
+++ b/arch/arm/configs/at91sam9263ek_defconfig
@@ -20,6 +20,7 @@ CONFIG_CONSOLE_ACTIVATE_ALL=y
CONFIG_DEFAULT_ENVIRONMENT_GENERIC=y
# CONFIG_CMD_ARM_CPUINFO is not set
CONFIG_LONGHELP=y
+CONFIG_CMD_IOMEM=y
CONFIG_CMD_MEMINFO=y
# CONFIG_CMD_BOOTU is not set
CONFIG_CMD_GO=y
@@ -38,6 +39,7 @@ CONFIG_CMD_EDIT=y
CONFIG_CMD_SPLASH=y
CONFIG_CMD_READLINE=y
CONFIG_CMD_TIMEOUT=y
+CONFIG_CMD_CLK=y
CONFIG_CMD_FLASH=y
CONFIG_CMD_GPIO=y
CONFIG_CMD_LED=y
@@ -45,6 +47,7 @@ CONFIG_CMD_LED_TRIGGER=y
CONFIG_CMD_OFTREE=y
CONFIG_NET=y
CONFIG_NET_NFS=y
+CONFIG_OF_BAREBOX_DRIVERS=y
CONFIG_DRIVER_NET_MACB=y
# CONFIG_SPI is not set
CONFIG_MTD=y
@@ -64,9 +67,12 @@ CONFIG_VIDEO=y
CONFIG_DRIVER_VIDEO_ATMEL=y
CONFIG_MCI=y
CONFIG_MCI_ATMEL=y
+CONFIG_SRAM=y
CONFIG_LED=y
CONFIG_LED_GPIO=y
+CONFIG_LED_GPIO_OF=y
CONFIG_LED_TRIGGERS=y
+CONFIG_KEYBOARD_GPIO=y
CONFIG_FS_TFTP=y
CONFIG_FS_FAT=y
CONFIG_FS_FAT_LFN=y
diff --git a/arch/arm/dts/at91sam9263ek.dts b/arch/arm/dts/at91sam9263ek.dts
index 7d0ae0447..f4b3098ac 100644
--- a/arch/arm/dts/at91sam9263ek.dts
+++ b/arch/arm/dts/at91sam9263ek.dts
@@ -15,6 +15,11 @@
chosen {
bootargs = "mem=64M root=/dev/mtdblock5 rw rootfstype=ubifs";
stdout-path = "serial0:115200n8";
+
+ environment at 0 {
+ compatible = "barebox,environment";
+ device-path = &nand_controller, "partname:bareboxenv";
+ };
};
memory {
@@ -106,6 +111,7 @@
atmel,dmacon = <0x1>;
atmel,lcdcon2 = <0x80008002>;
atmel,guard-time = <1>;
+ atmel,lcd-wiring-mode = "IBGR";
display-timings {
native-mode = <&timing0>;
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 5e9c575cc..a4fc024c1 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -538,6 +538,9 @@ if AT91_MULTI_BOARDS
config MACH_AT91SAM9263EK
bool "Atmel AT91SAM9263-EK"
depends on ARCH_AT91SAM9263
+ select OFDEVICE
+ select COMMON_CLK_OF_PROVIDER
+ select HAVE_AT91_USB_CLK
select HAVE_NAND_ATMEL_BUSWIDTH_16
select HAVE_AT91_BOOTSTRAP
select AT91SAM926X_BOARD_INIT
diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
index 35d187b4b..9d7b78dc7 100644
--- a/arch/arm/mach-at91/at91sam9263.c
+++ b/arch/arm/mach-at91/at91sam9263.c
@@ -12,6 +12,13 @@
* Clocks
* -------------------------------------------------------------------- */
+#if defined(CONFIG_COMMON_CLK_AT91)
+static void at91sam9263_initialize(void)
+{
+ at91_add_sam9_smc(0, AT91SAM9263_BASE_SMC0, 0x200);
+ at91_add_sam9_smc(1, AT91SAM9263_BASE_SMC1, 0x200);
+}
+#else
/*
* The peripheral clocks.
*/
@@ -248,6 +255,7 @@ static void at91sam9263_initialize(void)
at91_add_sam9_smc(0, AT91SAM9263_BASE_SMC0, 0x200);
at91_add_sam9_smc(1, AT91SAM9263_BASE_SMC1, 0x200);
}
+#endif
AT91_SOC_START(sam9263)
.init = at91sam9263_initialize,
--
2.12.0
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