1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 24c58063dSHeiko Stuebner /* 34c58063dSHeiko Stuebner * Rockchip Generic Register Files setup 44c58063dSHeiko Stuebner * 54c58063dSHeiko Stuebner * Copyright (c) 2016 Heiko Stuebner <heiko@sntech.de> 64c58063dSHeiko Stuebner */ 74c58063dSHeiko Stuebner 84c58063dSHeiko Stuebner #include <linux/err.h> 94c58063dSHeiko Stuebner #include <linux/mfd/syscon.h> 10*0e7ed4ddSRob Herring #include <linux/of.h> 114c58063dSHeiko Stuebner #include <linux/platform_device.h> 124c58063dSHeiko Stuebner #include <linux/regmap.h> 134c58063dSHeiko Stuebner 144c58063dSHeiko Stuebner #define HIWORD_UPDATE(val, mask, shift) \ 154c58063dSHeiko Stuebner ((val) << (shift) | (mask) << ((shift) + 16)) 164c58063dSHeiko Stuebner 174c58063dSHeiko Stuebner struct rockchip_grf_value { 184c58063dSHeiko Stuebner const char *desc; 194c58063dSHeiko Stuebner u32 reg; 204c58063dSHeiko Stuebner u32 val; 214c58063dSHeiko Stuebner }; 224c58063dSHeiko Stuebner 234c58063dSHeiko Stuebner struct rockchip_grf_info { 244c58063dSHeiko Stuebner const struct rockchip_grf_value *values; 254c58063dSHeiko Stuebner int num_values; 264c58063dSHeiko Stuebner }; 274c58063dSHeiko Stuebner 284c58063dSHeiko Stuebner #define RK3036_GRF_SOC_CON0 0x140 294c58063dSHeiko Stuebner 304c58063dSHeiko Stuebner static const struct rockchip_grf_value rk3036_defaults[] __initconst = { 314c58063dSHeiko Stuebner /* 324c58063dSHeiko Stuebner * Disable auto jtag/sdmmc switching that causes issues with the 334c58063dSHeiko Stuebner * clock-framework and the mmc controllers making them unreliable. 344c58063dSHeiko Stuebner */ 354c58063dSHeiko Stuebner { "jtag switching", RK3036_GRF_SOC_CON0, HIWORD_UPDATE(0, 1, 11) }, 364c58063dSHeiko Stuebner }; 374c58063dSHeiko Stuebner 384c58063dSHeiko Stuebner static const struct rockchip_grf_info rk3036_grf __initconst = { 394c58063dSHeiko Stuebner .values = rk3036_defaults, 404c58063dSHeiko Stuebner .num_values = ARRAY_SIZE(rk3036_defaults), 414c58063dSHeiko Stuebner }; 424c58063dSHeiko Stuebner 436e61c891SXiao Yao #define RK3128_GRF_SOC_CON0 0x140 446e61c891SXiao Yao 456e61c891SXiao Yao static const struct rockchip_grf_value rk3128_defaults[] __initconst = { 466e61c891SXiao Yao { "jtag switching", RK3128_GRF_SOC_CON0, HIWORD_UPDATE(0, 1, 8) }, 476e61c891SXiao Yao }; 486e61c891SXiao Yao 496e61c891SXiao Yao static const struct rockchip_grf_info rk3128_grf __initconst = { 506e61c891SXiao Yao .values = rk3128_defaults, 516e61c891SXiao Yao .num_values = ARRAY_SIZE(rk3128_defaults), 526e61c891SXiao Yao }; 536e61c891SXiao Yao 54e17ee5f0SShawn Lin #define RK3228_GRF_SOC_CON6 0x418 55e17ee5f0SShawn Lin 56e17ee5f0SShawn Lin static const struct rockchip_grf_value rk3228_defaults[] __initconst = { 57e17ee5f0SShawn Lin { "jtag switching", RK3228_GRF_SOC_CON6, HIWORD_UPDATE(0, 1, 8) }, 58e17ee5f0SShawn Lin }; 59e17ee5f0SShawn Lin 60e17ee5f0SShawn Lin static const struct rockchip_grf_info rk3228_grf __initconst = { 61e17ee5f0SShawn Lin .values = rk3228_defaults, 62e17ee5f0SShawn Lin .num_values = ARRAY_SIZE(rk3228_defaults), 63e17ee5f0SShawn Lin }; 64e17ee5f0SShawn Lin 654c58063dSHeiko Stuebner #define RK3288_GRF_SOC_CON0 0x244 66bbdc00a7SDouglas Anderson #define RK3288_GRF_SOC_CON2 0x24c 674c58063dSHeiko Stuebner 684c58063dSHeiko Stuebner static const struct rockchip_grf_value rk3288_defaults[] __initconst = { 694c58063dSHeiko Stuebner { "jtag switching", RK3288_GRF_SOC_CON0, HIWORD_UPDATE(0, 1, 12) }, 70bbdc00a7SDouglas Anderson { "pwm select", RK3288_GRF_SOC_CON2, HIWORD_UPDATE(1, 1, 0) }, 714c58063dSHeiko Stuebner }; 724c58063dSHeiko Stuebner 734c58063dSHeiko Stuebner static const struct rockchip_grf_info rk3288_grf __initconst = { 744c58063dSHeiko Stuebner .values = rk3288_defaults, 754c58063dSHeiko Stuebner .num_values = ARRAY_SIZE(rk3288_defaults), 764c58063dSHeiko Stuebner }; 774c58063dSHeiko Stuebner 78887758c3SShawn Lin #define RK3328_GRF_SOC_CON4 0x410 79887758c3SShawn Lin 80887758c3SShawn Lin static const struct rockchip_grf_value rk3328_defaults[] __initconst = { 81887758c3SShawn Lin { "jtag switching", RK3328_GRF_SOC_CON4, HIWORD_UPDATE(0, 1, 12) }, 82887758c3SShawn Lin }; 83887758c3SShawn Lin 84887758c3SShawn Lin static const struct rockchip_grf_info rk3328_grf __initconst = { 85887758c3SShawn Lin .values = rk3328_defaults, 86887758c3SShawn Lin .num_values = ARRAY_SIZE(rk3328_defaults), 87887758c3SShawn Lin }; 88887758c3SShawn Lin 894c58063dSHeiko Stuebner #define RK3368_GRF_SOC_CON15 0x43c 904c58063dSHeiko Stuebner 914c58063dSHeiko Stuebner static const struct rockchip_grf_value rk3368_defaults[] __initconst = { 924c58063dSHeiko Stuebner { "jtag switching", RK3368_GRF_SOC_CON15, HIWORD_UPDATE(0, 1, 13) }, 934c58063dSHeiko Stuebner }; 944c58063dSHeiko Stuebner 954c58063dSHeiko Stuebner static const struct rockchip_grf_info rk3368_grf __initconst = { 964c58063dSHeiko Stuebner .values = rk3368_defaults, 974c58063dSHeiko Stuebner .num_values = ARRAY_SIZE(rk3368_defaults), 984c58063dSHeiko Stuebner }; 994c58063dSHeiko Stuebner 1004c58063dSHeiko Stuebner #define RK3399_GRF_SOC_CON7 0xe21c 1014c58063dSHeiko Stuebner 1024c58063dSHeiko Stuebner static const struct rockchip_grf_value rk3399_defaults[] __initconst = { 1034c58063dSHeiko Stuebner { "jtag switching", RK3399_GRF_SOC_CON7, HIWORD_UPDATE(0, 1, 12) }, 1044c58063dSHeiko Stuebner }; 1054c58063dSHeiko Stuebner 1064c58063dSHeiko Stuebner static const struct rockchip_grf_info rk3399_grf __initconst = { 1074c58063dSHeiko Stuebner .values = rk3399_defaults, 1084c58063dSHeiko Stuebner .num_values = ARRAY_SIZE(rk3399_defaults), 1094c58063dSHeiko Stuebner }; 1104c58063dSHeiko Stuebner 1115c0bb711SPeter Geis #define RK3566_GRF_USB3OTG0_CON1 0x0104 1125c0bb711SPeter Geis 1135c0bb711SPeter Geis static const struct rockchip_grf_value rk3566_defaults[] __initconst = { 1145c0bb711SPeter Geis { "usb3otg port switch", RK3566_GRF_USB3OTG0_CON1, HIWORD_UPDATE(0, 1, 12) }, 1155c0bb711SPeter Geis { "usb3otg clock switch", RK3566_GRF_USB3OTG0_CON1, HIWORD_UPDATE(1, 1, 7) }, 1165c0bb711SPeter Geis { "usb3otg disable usb3", RK3566_GRF_USB3OTG0_CON1, HIWORD_UPDATE(1, 1, 0) }, 1175c0bb711SPeter Geis }; 1185c0bb711SPeter Geis 1195c0bb711SPeter Geis static const struct rockchip_grf_info rk3566_pipegrf __initconst = { 1205c0bb711SPeter Geis .values = rk3566_defaults, 1215c0bb711SPeter Geis .num_values = ARRAY_SIZE(rk3566_defaults), 1225c0bb711SPeter Geis }; 1235c0bb711SPeter Geis 1245c0bb711SPeter Geis 1254c58063dSHeiko Stuebner static const struct of_device_id rockchip_grf_dt_match[] __initconst = { 1264c58063dSHeiko Stuebner { 1274c58063dSHeiko Stuebner .compatible = "rockchip,rk3036-grf", 1284c58063dSHeiko Stuebner .data = (void *)&rk3036_grf, 1294c58063dSHeiko Stuebner }, { 1306e61c891SXiao Yao .compatible = "rockchip,rk3128-grf", 1316e61c891SXiao Yao .data = (void *)&rk3128_grf, 1326e61c891SXiao Yao }, { 133e17ee5f0SShawn Lin .compatible = "rockchip,rk3228-grf", 134e17ee5f0SShawn Lin .data = (void *)&rk3228_grf, 135e17ee5f0SShawn Lin }, { 1364c58063dSHeiko Stuebner .compatible = "rockchip,rk3288-grf", 1374c58063dSHeiko Stuebner .data = (void *)&rk3288_grf, 1384c58063dSHeiko Stuebner }, { 139887758c3SShawn Lin .compatible = "rockchip,rk3328-grf", 140887758c3SShawn Lin .data = (void *)&rk3328_grf, 141887758c3SShawn Lin }, { 1424c58063dSHeiko Stuebner .compatible = "rockchip,rk3368-grf", 1434c58063dSHeiko Stuebner .data = (void *)&rk3368_grf, 1444c58063dSHeiko Stuebner }, { 1454c58063dSHeiko Stuebner .compatible = "rockchip,rk3399-grf", 1464c58063dSHeiko Stuebner .data = (void *)&rk3399_grf, 1475c0bb711SPeter Geis }, { 1485c0bb711SPeter Geis .compatible = "rockchip,rk3566-pipe-grf", 1495c0bb711SPeter Geis .data = (void *)&rk3566_pipegrf, 1504c58063dSHeiko Stuebner }, 1514c58063dSHeiko Stuebner { /* sentinel */ }, 1524c58063dSHeiko Stuebner }; 1534c58063dSHeiko Stuebner 1544c58063dSHeiko Stuebner static int __init rockchip_grf_init(void) 1554c58063dSHeiko Stuebner { 1564c58063dSHeiko Stuebner const struct rockchip_grf_info *grf_info; 1574c58063dSHeiko Stuebner const struct of_device_id *match; 1584c58063dSHeiko Stuebner struct device_node *np; 1594c58063dSHeiko Stuebner struct regmap *grf; 1604c58063dSHeiko Stuebner int ret, i; 1614c58063dSHeiko Stuebner 1624c58063dSHeiko Stuebner np = of_find_matching_node_and_match(NULL, rockchip_grf_dt_match, 1634c58063dSHeiko Stuebner &match); 1644c58063dSHeiko Stuebner if (!np) 1654c58063dSHeiko Stuebner return -ENODEV; 1664c58063dSHeiko Stuebner if (!match || !match->data) { 1674c58063dSHeiko Stuebner pr_err("%s: missing grf data\n", __func__); 1689b59588dSMiaoqian Lin of_node_put(np); 1694c58063dSHeiko Stuebner return -EINVAL; 1704c58063dSHeiko Stuebner } 1714c58063dSHeiko Stuebner 1724c58063dSHeiko Stuebner grf_info = match->data; 1734c58063dSHeiko Stuebner 1744c58063dSHeiko Stuebner grf = syscon_node_to_regmap(np); 1759b59588dSMiaoqian Lin of_node_put(np); 1764c58063dSHeiko Stuebner if (IS_ERR(grf)) { 1774c58063dSHeiko Stuebner pr_err("%s: could not get grf syscon\n", __func__); 1784c58063dSHeiko Stuebner return PTR_ERR(grf); 1794c58063dSHeiko Stuebner } 1804c58063dSHeiko Stuebner 1814c58063dSHeiko Stuebner for (i = 0; i < grf_info->num_values; i++) { 1824c58063dSHeiko Stuebner const struct rockchip_grf_value *val = &grf_info->values[i]; 1834c58063dSHeiko Stuebner 1844c58063dSHeiko Stuebner pr_debug("%s: adjusting %s in %#6x to %#10x\n", __func__, 1854c58063dSHeiko Stuebner val->desc, val->reg, val->val); 1864c58063dSHeiko Stuebner ret = regmap_write(grf, val->reg, val->val); 1874c58063dSHeiko Stuebner if (ret < 0) 1884c58063dSHeiko Stuebner pr_err("%s: write to %#6x failed with %d\n", 1894c58063dSHeiko Stuebner __func__, val->reg, ret); 1904c58063dSHeiko Stuebner } 1914c58063dSHeiko Stuebner 1924c58063dSHeiko Stuebner return 0; 1934c58063dSHeiko Stuebner } 1944c58063dSHeiko Stuebner postcore_initcall(rockchip_grf_init); 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