drivers/memory/da8xx-ddrctl.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * TI da8xx DDR2/mDDR controller driver
23  * some changes (as is the case for the LCD controller on da850-lcdk - the
37 		.name = "da850-pbbpr",
56 		.name = "da850-pbbpr",
64 		.board = "ti,da850-lcdk",
78 		if (strcmp(knob->name, setting->name) == 0)  in da8xx_ddrctl_match_knob()
93 		if (of_machine_is_compatible(board_settings->board))  in da8xx_ddrctl_get_board_settings()
94 			return board_settings->settings;  in da8xx_ddrctl_get_board_settings()
109 	dev = &pdev->dev;  in da8xx_ddrctl_probe()
114 		return -EINVAL;  in da8xx_ddrctl_probe()
119 		dev_err(dev, "unable to map memory controller registers\n");  in da8xx_ddrctl_probe()
123 	for (; setting->name; setting++) {  in da8xx_ddrctl_probe()
127 				 "no such config option: %s\n", setting->name);  in da8xx_ddrctl_probe()
131 		if (knob->reg + sizeof(u32) > resource_size(res)) {  in da8xx_ddrctl_probe()
134 				 knob->name);  in da8xx_ddrctl_probe()
138 		reg = readl(ddrctl + knob->reg);  in da8xx_ddrctl_probe()
139 		reg &= knob->mask;  in da8xx_ddrctl_probe()
140 		reg |= setting->val << knob->shift;  in da8xx_ddrctl_probe()
142 		dev_dbg(dev, "writing 0x%08x to %s\n", reg, setting->name);  in da8xx_ddrctl_probe()
144 		writel(reg, ddrctl + knob->reg);  in da8xx_ddrctl_probe()
151 	{ .compatible = "ti,da850-ddr-controller", },
158 		.name = "da850-ddr-controller",
165 MODULE_DESCRIPTION("TI da8xx DDR2/mDDR controller driver");