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>
104c58063dSHeiko Stuebner #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
124*6f6878ecSOndrej Jirman #define RK3588_GRF_SOC_CON6 0x0318
125*6f6878ecSOndrej Jirman
126*6f6878ecSOndrej Jirman static const struct rockchip_grf_value rk3588_defaults[] __initconst = {
127*6f6878ecSOndrej Jirman { "jtag switching", RK3588_GRF_SOC_CON6, HIWORD_UPDATE(0, 1, 14) },
128*6f6878ecSOndrej Jirman };
129*6f6878ecSOndrej Jirman
130*6f6878ecSOndrej Jirman static const struct rockchip_grf_info rk3588_sysgrf __initconst = {
131*6f6878ecSOndrej Jirman .values = rk3588_defaults,
132*6f6878ecSOndrej Jirman .num_values = ARRAY_SIZE(rk3588_defaults),
133*6f6878ecSOndrej Jirman };
134*6f6878ecSOndrej Jirman
1355c0bb711SPeter Geis
1364c58063dSHeiko Stuebner static const struct of_device_id rockchip_grf_dt_match[] __initconst = {
1374c58063dSHeiko Stuebner {
1384c58063dSHeiko Stuebner .compatible = "rockchip,rk3036-grf",
1394c58063dSHeiko Stuebner .data = (void *)&rk3036_grf,
1404c58063dSHeiko Stuebner }, {
1416e61c891SXiao Yao .compatible = "rockchip,rk3128-grf",
1426e61c891SXiao Yao .data = (void *)&rk3128_grf,
1436e61c891SXiao Yao }, {
144e17ee5f0SShawn Lin .compatible = "rockchip,rk3228-grf",
145e17ee5f0SShawn Lin .data = (void *)&rk3228_grf,
146e17ee5f0SShawn Lin }, {
1474c58063dSHeiko Stuebner .compatible = "rockchip,rk3288-grf",
1484c58063dSHeiko Stuebner .data = (void *)&rk3288_grf,
1494c58063dSHeiko Stuebner }, {
150887758c3SShawn Lin .compatible = "rockchip,rk3328-grf",
151887758c3SShawn Lin .data = (void *)&rk3328_grf,
152887758c3SShawn Lin }, {
1534c58063dSHeiko Stuebner .compatible = "rockchip,rk3368-grf",
1544c58063dSHeiko Stuebner .data = (void *)&rk3368_grf,
1554c58063dSHeiko Stuebner }, {
1564c58063dSHeiko Stuebner .compatible = "rockchip,rk3399-grf",
1574c58063dSHeiko Stuebner .data = (void *)&rk3399_grf,
1585c0bb711SPeter Geis }, {
1595c0bb711SPeter Geis .compatible = "rockchip,rk3566-pipe-grf",
1605c0bb711SPeter Geis .data = (void *)&rk3566_pipegrf,
161*6f6878ecSOndrej Jirman }, {
162*6f6878ecSOndrej Jirman .compatible = "rockchip,rk3588-sys-grf",
163*6f6878ecSOndrej Jirman .data = (void *)&rk3588_sysgrf,
1644c58063dSHeiko Stuebner },
1654c58063dSHeiko Stuebner { /* sentinel */ },
1664c58063dSHeiko Stuebner };
1674c58063dSHeiko Stuebner
rockchip_grf_init(void)1684c58063dSHeiko Stuebner static int __init rockchip_grf_init(void)
1694c58063dSHeiko Stuebner {
1704c58063dSHeiko Stuebner const struct rockchip_grf_info *grf_info;
1714c58063dSHeiko Stuebner const struct of_device_id *match;
1724c58063dSHeiko Stuebner struct device_node *np;
1734c58063dSHeiko Stuebner struct regmap *grf;
1744c58063dSHeiko Stuebner int ret, i;
1754c58063dSHeiko Stuebner
1764c58063dSHeiko Stuebner np = of_find_matching_node_and_match(NULL, rockchip_grf_dt_match,
1774c58063dSHeiko Stuebner &match);
1784c58063dSHeiko Stuebner if (!np)
1794c58063dSHeiko Stuebner return -ENODEV;
1804c58063dSHeiko Stuebner if (!match || !match->data) {
1814c58063dSHeiko Stuebner pr_err("%s: missing grf data\n", __func__);
1829b59588dSMiaoqian Lin of_node_put(np);
1834c58063dSHeiko Stuebner return -EINVAL;
1844c58063dSHeiko Stuebner }
1854c58063dSHeiko Stuebner
1864c58063dSHeiko Stuebner grf_info = match->data;
1874c58063dSHeiko Stuebner
1884c58063dSHeiko Stuebner grf = syscon_node_to_regmap(np);
1899b59588dSMiaoqian Lin of_node_put(np);
1904c58063dSHeiko Stuebner if (IS_ERR(grf)) {
1914c58063dSHeiko Stuebner pr_err("%s: could not get grf syscon\n", __func__);
1924c58063dSHeiko Stuebner return PTR_ERR(grf);
1934c58063dSHeiko Stuebner }
1944c58063dSHeiko Stuebner
1954c58063dSHeiko Stuebner for (i = 0; i < grf_info->num_values; i++) {
1964c58063dSHeiko Stuebner const struct rockchip_grf_value *val = &grf_info->values[i];
1974c58063dSHeiko Stuebner
1984c58063dSHeiko Stuebner pr_debug("%s: adjusting %s in %#6x to %#10x\n", __func__,
1994c58063dSHeiko Stuebner val->desc, val->reg, val->val);
2004c58063dSHeiko Stuebner ret = regmap_write(grf, val->reg, val->val);
2014c58063dSHeiko Stuebner if (ret < 0)
2024c58063dSHeiko Stuebner pr_err("%s: write to %#6x failed with %d\n",
2034c58063dSHeiko Stuebner __func__, val->reg, ret);
2044c58063dSHeiko Stuebner }
2054c58063dSHeiko Stuebner
2064c58063dSHeiko Stuebner return 0;
2074c58063dSHeiko Stuebner }
2084c58063dSHeiko Stuebner postcore_initcall(rockchip_grf_init);
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