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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/arch/arm/mach-at91/arm926ejs/at91sam9261_devices.c
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/arch/arm/mach-at91/arm926ejs/at91sam9261_devices.c')
-rw-r--r--roms/u-boot/arch/arm/mach-at91/arm926ejs/at91sam9261_devices.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-at91/arm926ejs/at91sam9261_devices.c b/roms/u-boot/arch/arm/mach-at91/arm926ejs/at91sam9261_devices.c
new file mode 100644
index 000000000..0c2b9f2ec
--- /dev/null
+++ b/roms/u-boot/arch/arm/mach-at91/arm926ejs/at91sam9261_devices.c
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian@popies.net>
+ * Lead Tech Design <www.leadtechdesign.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/at91_common.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/gpio.h>
+
+/*
+ * if CONFIG_AT91_GPIO_PULLUP ist set, keep pullups on on all
+ * peripheral pins. Good to have if hardware is soldered optionally
+ * or in case of SPI no slave is selected. Avoid lines to float
+ * needlessly. Use a short local PUP define.
+ *
+ * Due to errata "TXD floats when CTS is inactive" pullups are always
+ * on for TXD pins.
+ */
+#ifdef CONFIG_AT91_GPIO_PULLUP
+# define PUP CONFIG_AT91_GPIO_PULLUP
+#else
+# define PUP 0
+#endif
+
+void at91_serial0_hw_init(void)
+{
+ at91_set_a_periph(AT91_PIO_PORTC, 8, 1); /* TXD0 */
+ at91_set_a_periph(AT91_PIO_PORTC, 9, 0); /* RXD0 */
+ at91_periph_clk_enable(ATMEL_ID_USART0);
+}
+
+void at91_serial1_hw_init(void)
+{
+ at91_set_a_periph(AT91_PIO_PORTC, 12, 1); /* TXD1 */
+ at91_set_a_periph(AT91_PIO_PORTC, 13, 0); /* RXD1 */
+ at91_periph_clk_enable(ATMEL_ID_USART1);
+}
+
+void at91_serial2_hw_init(void)
+{
+ at91_set_a_periph(AT91_PIO_PORTC, 14, 1); /* TXD2 */
+ at91_set_a_periph(AT91_PIO_PORTC, 15, 0); /* RXD2 */
+ at91_periph_clk_enable(ATMEL_ID_USART2);
+}
+
+void at91_seriald_hw_init(void)
+{
+ at91_set_a_periph(AT91_PIO_PORTA, 9, 0); /* DRXD */
+ at91_set_a_periph(AT91_PIO_PORTA, 10, 1); /* DTXD */
+ at91_periph_clk_enable(ATMEL_ID_SYS);
+}
+
+#ifdef CONFIG_ATMEL_SPI
+void at91_spi0_hw_init(unsigned long cs_mask)
+{
+ at91_set_a_periph(AT91_PIO_PORTA, 0, PUP); /* SPI0_MISO */
+ at91_set_a_periph(AT91_PIO_PORTA, 1, PUP); /* SPI0_MOSI */
+ at91_set_a_periph(AT91_PIO_PORTA, 2, PUP); /* SPI0_SPCK */
+
+ at91_periph_clk_enable(ATMEL_ID_SPI0);
+
+ if (cs_mask & (1 << 0)) {
+ at91_set_a_periph(AT91_PIO_PORTA, 3, 1);
+ }
+ if (cs_mask & (1 << 1)) {
+ at91_set_a_periph(AT91_PIO_PORTA, 4, 1);
+ }
+ if (cs_mask & (1 << 2)) {
+ at91_set_a_periph(AT91_PIO_PORTA, 5, 1);
+ }
+ if (cs_mask & (1 << 3)) {
+ at91_set_a_periph(AT91_PIO_PORTA, 6, 1);
+ }
+ if (cs_mask & (1 << 4)) {
+ at91_set_pio_output(AT91_PIO_PORTA, 3, 1);
+ }
+ if (cs_mask & (1 << 5)) {
+ at91_set_pio_output(AT91_PIO_PORTA, 4, 1);
+ }
+ if (cs_mask & (1 << 6)) {
+ at91_set_pio_output(AT91_PIO_PORTA, 5, 1);
+ }
+ if (cs_mask & (1 << 7)) {
+ at91_set_pio_output(AT91_PIO_PORTA, 6, 1);
+ }
+}
+
+void at91_spi1_hw_init(unsigned long cs_mask)
+{
+ at91_set_a_periph(AT91_PIO_PORTB, 30, PUP); /* SPI1_MISO */
+ at91_set_a_periph(AT91_PIO_PORTB, 31, PUP); /* SPI1_MOSI */
+ at91_set_a_periph(AT91_PIO_PORTB, 29, PUP); /* SPI1_SPCK */
+
+ at91_periph_clk_enable(ATMEL_ID_SPI1);
+
+ if (cs_mask & (1 << 0)) {
+ at91_set_a_periph(AT91_PIO_PORTB, 28, 1);
+ }
+ if (cs_mask & (1 << 1)) {
+ at91_set_b_periph(AT91_PIO_PORTA, 24, 1);
+ }
+ if (cs_mask & (1 << 2)) {
+ at91_set_b_periph(AT91_PIO_PORTA, 25, 1);
+ }
+ if (cs_mask & (1 << 3)) {
+ at91_set_a_periph(AT91_PIO_PORTA, 26, 1);
+ }
+ if (cs_mask & (1 << 4)) {
+ at91_set_pio_output(AT91_PIO_PORTB, 28, 1);
+ }
+ if (cs_mask & (1 << 5)) {
+ at91_set_pio_output(AT91_PIO_PORTA, 24, 1);
+ }
+ if (cs_mask & (1 << 6)) {
+ at91_set_pio_output(AT91_PIO_PORTA, 25, 1);
+ }
+ if (cs_mask & (1 << 7)) {
+ at91_set_pio_output(AT91_PIO_PORTA, 26, 1);
+ }
+}
+#endif