board/theadorable/fpga.c

4  * SPDX-License-Identifier:	GPL-2.0+
14 #include <asm/arch-mvebu/spi.h>
72 	 * Write data to FPGA attached to SPI bus via SPI direct write.  in fpga_write_fn()
88 	control_reg = readl(&reg->ctrl);  in fpga_write_fn()
89 	config_reg = readl(&reg->cfg);  in fpga_write_fn()
90 	writel(0x00000214, &reg->cfg);		/* 27MHz clock */  in fpga_write_fn()
91 	writel(0x00000000, &reg->dw_cfg);	/* don't de-asset CS */  in fpga_write_fn()
92 	writel(KWSPI_CSN_ACT, &reg->ctrl);	/* activate CS */  in fpga_write_fn()
98 	writel(control_reg, &reg->ctrl);  in fpga_write_fn()
99 	writel(config_reg, &reg->cfg);  in fpga_write_fn()
108 	unsigned long ts;  in fpga_done_fn()  local
113 	ts = get_timer(0);  in fpga_done_fn()
117 	} while (get_timer(ts) < 1000);  in fpga_done_fn()
120 	return -ENODEV;  in fpga_done_fn()
137 		-1,
146 		 * SPI-Bus | SPI-Dev | Config-Pin | Done-Pin
156 		-1,
165 		 * SPI-Bus | SPI-Dev | Config-Pin | Done-Pin