1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
102 	{ "rockchip,rk3399-emmc-phy",	1 },
112 #define	LOWEST_SET_BIT(mask)	((((mask) - 1) & (mask)) ^ (mask))
150 		SYSCON_WRITE_4(sc->syscon, GRF_EMMCPHY_CON6,  in rk_emmcphy_enable()
153 		/* Enable output tap delay */  in rk_emmcphy_enable()
156 		SYSCON_WRITE_4(sc->syscon, GRF_EMMCPHY_CON0,  in rk_emmcphy_enable()
163 	SYSCON_WRITE_4(sc->syscon, GRF_EMMCPHY_CON6, (mask << 16) | val);  in rk_emmcphy_enable()
168 	sc->phy_conf = (struct rk_emmcphy_conf *)ofw_bus_search_compatible(dev,  in rk_emmcphy_enable()
169 	    compat_data)->ocd_data;  in rk_emmcphy_enable()
172 	error = clk_get_by_ofw_name(dev, 0, "emmcclk", &sc->clk);  in rk_emmcphy_enable()
175 		sc->clk = NULL;  in rk_emmcphy_enable()
179 	if (sc->clk) {  in rk_emmcphy_enable()
180 		error = clk_get_freq(sc->clk, &rate);  in rk_emmcphy_enable()
200 	DELAY(3);  in rk_emmcphy_enable()
205 	SYSCON_WRITE_4(sc->syscon, GRF_EMMCPHY_CON6, (mask << 16) | val);  in rk_emmcphy_enable()
208 	DELAY(10);  in rk_emmcphy_enable()
209 	val = SYSCON_READ_4(sc->syscon, GRF_EMMCPHY_STATUS);  in rk_emmcphy_enable()
218 	SYSCON_WRITE_4(sc->syscon, GRF_EMMCPHY_CON0, (mask << 16) | val);  in rk_emmcphy_enable()
223 	SYSCON_WRITE_4(sc->syscon, GRF_EMMCPHY_CON6, (mask << 16) | val);  in rk_emmcphy_enable()
233 		 * At 200MHz clock frequency the DLL ready delay is 2.56us,  in rk_emmcphy_enable()
234 		 * at 100MHz clock frequency the DLL ready delay is 5.112us and  in rk_emmcphy_enable()
235 		 * at 50 MHz clock frequency the DLL ready delay is 10.231us.  in rk_emmcphy_enable()
236 		 * We could use safe values for wait, 12us, 8us, 6us and 4us  in rk_emmcphy_enable()
244 		DELAY(50000);  in rk_emmcphy_enable()
245 		val = SYSCON_READ_4(sc->syscon, GRF_EMMCPHY_STATUS);  in rk_emmcphy_enable()
262 	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)  in rk_emmcphy_probe()
289 	if (OF_hasprop(xnode, "arasan,soc-ctl-syscon") &&  in rk_emmcphy_attach()
291 	    "arasan,soc-ctl-syscon", &sc->syscon) != 0) {  in rk_emmcphy_attach()
296 	if (sc->syscon == NULL) {  in rk_emmcphy_attach()