X-Git-Url: http://git.ipfire.org/?p=people%2Fms%2Fu-boot.git;a=blobdiff_plain;f=drivers%2Fclk%2Frockchip%2Fclk_rk3399.c;h=fb74c441ff9f84f7b151f819c2e588f1661ec45e;hp=9d963be5529a74a85767519b82e39a0a8c931dc5;hb=434d5a00a4578f826e7e2cef29bf2388dd760a88;hpb=75c7859803a334a41c8bdf0a31cd1cd61f579076 diff --git a/drivers/clk/rockchip/clk_rk3399.c b/drivers/clk/rockchip/clk_rk3399.c index 9d963be552..fb74c441ff 100644 --- a/drivers/clk/rockchip/clk_rk3399.c +++ b/drivers/clk/rockchip/clk_rk3399.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -181,7 +182,8 @@ enum { /* CLKSEL_CON26 */ CLK_SARADC_DIV_CON_SHIFT = 8, - CLK_SARADC_DIV_CON_MASK = 0xff << CLK_SARADC_DIV_CON_SHIFT, + CLK_SARADC_DIV_CON_MASK = GENMASK(15, 8), + CLK_SARADC_DIV_CON_WIDTH = 8, /* CLKSEL_CON27 */ CLK_TSADC_SEL_X24M = 0x0, @@ -396,84 +398,6 @@ static int pll_para_config(u32 freq_hz, struct pll_div *div) return 0; } -#ifdef CONFIG_SPL_BUILD -static void rkclk_init(struct rk3399_cru *cru) -{ - u32 aclk_div; - u32 hclk_div; - u32 pclk_div; - - /* - * some cru registers changed by bootrom, we'd better reset them to - * reset/default values described in TRM to avoid confusion in kernel. - * Please consider these three lines as a fix of bootrom bug. - */ - rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101); - rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f); - rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003); - - /* configure gpll cpll */ - rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg); - rkclk_set_pll(&cru->cpll_con[0], &cpll_init_cfg); - - /* configure perihp aclk, hclk, pclk */ - aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1; - assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); - - hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1; - assert((hclk_div + 1) * PERIHP_HCLK_HZ == - PERIHP_ACLK_HZ && (hclk_div < 0x4)); - - pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1; - assert((pclk_div + 1) * PERIHP_PCLK_HZ == - PERIHP_ACLK_HZ && (pclk_div < 0x7)); - - rk_clrsetreg(&cru->clksel_con[14], - PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK | - ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK, - pclk_div << PCLK_PERIHP_DIV_CON_SHIFT | - hclk_div << HCLK_PERIHP_DIV_CON_SHIFT | - ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT | - aclk_div << ACLK_PERIHP_DIV_CON_SHIFT); - - /* configure perilp0 aclk, hclk, pclk */ - aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1; - assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); - - hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1; - assert((hclk_div + 1) * PERILP0_HCLK_HZ == - PERILP0_ACLK_HZ && (hclk_div < 0x4)); - - pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1; - assert((pclk_div + 1) * PERILP0_PCLK_HZ == - PERILP0_ACLK_HZ && (pclk_div < 0x7)); - - rk_clrsetreg(&cru->clksel_con[23], - PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK | - ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK, - pclk_div << PCLK_PERILP0_DIV_CON_SHIFT | - hclk_div << HCLK_PERILP0_DIV_CON_SHIFT | - ACLK_PERILP0_PLL_SEL_GPLL << ACLK_PERILP0_PLL_SEL_SHIFT | - aclk_div << ACLK_PERILP0_DIV_CON_SHIFT); - - /* perilp1 hclk select gpll as source */ - hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1; - assert((hclk_div + 1) * PERILP1_HCLK_HZ == - GPLL_HZ && (hclk_div < 0x1f)); - - pclk_div = PERILP1_HCLK_HZ / PERILP1_HCLK_HZ - 1; - assert((pclk_div + 1) * PERILP1_HCLK_HZ == - PERILP1_HCLK_HZ && (hclk_div < 0x7)); - - rk_clrsetreg(&cru->clksel_con[25], - PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK | - HCLK_PERILP1_PLL_SEL_MASK, - pclk_div << PCLK_PERILP1_DIV_CON_SHIFT | - hclk_div << HCLK_PERILP1_DIV_CON_SHIFT | - HCLK_PERILP1_PLL_SEL_GPLL << HCLK_PERILP1_PLL_SEL_SHIFT); -} -#endif - void rk3399_configure_cpu(struct rk3399_cru *cru, enum apll_l_frequencies apll_l_freq) { @@ -645,11 +569,6 @@ static const struct spi_clkreg spi_clkregs[] = { .sel_shift = CLK_SPI5_PLL_SEL_SHIFT, }, }; -static inline u32 extract_bits(u32 val, unsigned width, unsigned shift) -{ - return (val >> shift) & ((1 << width) - 1); -} - static ulong rk3399_spi_get_clk(struct rk3399_cru *cru, ulong clk_id) { const struct spi_clkreg *spiclk = NULL; @@ -661,12 +580,13 @@ static ulong rk3399_spi_get_clk(struct rk3399_cru *cru, ulong clk_id) break; default: - error("%s: SPI clk-id %ld not supported\n", __func__, clk_id); + pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id); return -EINVAL; } val = readl(&cru->clksel_con[spiclk->reg]); - div = extract_bits(val, CLK_SPI_PLL_DIV_CON_WIDTH, spiclk->div_shift); + div = bitfield_extract(val, spiclk->div_shift, + CLK_SPI_PLL_DIV_CON_WIDTH); return DIV_TO_RATE(GPLL_HZ, div); } @@ -685,7 +605,7 @@ static ulong rk3399_spi_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz) break; default: - error("%s: SPI clk-id %ld not supported\n", __func__, clk_id); + pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id); return -EINVAL; } @@ -822,6 +742,30 @@ static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru, return rk3399_mmc_get_clk(cru, clk_id); } +static ulong rk3399_gmac_set_clk(struct rk3399_cru *cru, ulong rate) +{ + ulong ret; + + /* + * The RGMII CLK can be derived either from an external "clkin" + * or can be generated from internally by a divider from SCLK_MAC. + */ + if (readl(&cru->clksel_con[19]) & BIT(4)) { + /* An external clock will always generate the right rate... */ + ret = rate; + } else { + /* + * No platform uses an internal clock to date. + * Implement this once it becomes necessary and print an error + * if someone tries to use it (while it remains unimplemented). + */ + pr_err("%s: internal clock is UNIMPLEMENTED\n", __func__); + ret = 0; + } + + return ret; +} + #define PMUSGRF_DDR_RGN_CON16 0xff330040 static ulong rk3399_ddr_set_clk(struct rk3399_cru *cru, ulong set_rate) @@ -854,12 +798,38 @@ static ulong rk3399_ddr_set_clk(struct rk3399_cru *cru, {.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1}; break; default: - error("Unsupported SDRAM frequency!,%ld\n", set_rate); + pr_err("Unsupported SDRAM frequency!,%ld\n", set_rate); } rkclk_set_pll(&cru->dpll_con[0], &dpll_cfg); return set_rate; } + +static ulong rk3399_saradc_get_clk(struct rk3399_cru *cru) +{ + u32 div, val; + + val = readl(&cru->clksel_con[26]); + div = bitfield_extract(val, CLK_SARADC_DIV_CON_SHIFT, + CLK_SARADC_DIV_CON_WIDTH); + + return DIV_TO_RATE(OSC_HZ, div); +} + +static ulong rk3399_saradc_set_clk(struct rk3399_cru *cru, uint hz) +{ + int src_clk_div; + + src_clk_div = DIV_ROUND_UP(OSC_HZ, hz) - 1; + assert(src_clk_div < 128); + + rk_clrsetreg(&cru->clksel_con[26], + CLK_SARADC_DIV_CON_MASK, + src_clk_div << CLK_SARADC_DIV_CON_SHIFT); + + return rk3399_saradc_get_clk(cru); +} + static ulong rk3399_clk_get_rate(struct clk *clk) { struct rk3399_clk_priv *priv = dev_get_priv(clk->dev); @@ -895,6 +865,9 @@ static ulong rk3399_clk_get_rate(struct clk *clk) break; case PCLK_EFUSE1024NS: break; + case SCLK_SARADC: + rate = rk3399_saradc_get_clk(priv->cru); + break; default: return -ENOENT; } @@ -910,14 +883,31 @@ static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate) switch (clk->id) { case 0 ... 63: return 0; + + case ACLK_PERIHP: + case HCLK_PERIHP: + case PCLK_PERIHP: + return 0; + + case ACLK_PERILP0: + case HCLK_PERILP0: + case PCLK_PERILP0: + return 0; + + case ACLK_CCI: + return 0; + + case HCLK_PERILP1: + case PCLK_PERILP1: + return 0; + case HCLK_SDMMC: case SCLK_SDMMC: case SCLK_EMMC: ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate); break; case SCLK_MAC: - /* nothing to do, as this is an external clock */ - ret = rate; + ret = rk3399_gmac_set_clk(priv->cru, rate); break; case SCLK_I2C1: case SCLK_I2C2: @@ -943,6 +933,9 @@ static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate) break; case PCLK_EFUSE1024NS: break; + case SCLK_SARADC: + ret = rk3399_saradc_set_clk(priv->cru, rate); + break; default: return -ENOENT; } @@ -950,6 +943,52 @@ static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate) return ret; } +static int __maybe_unused rk3399_gmac_set_parent(struct clk *clk, struct clk *parent) +{ + struct rk3399_clk_priv *priv = dev_get_priv(clk->dev); + const char *clock_output_name; + int ret; + + /* + * If the requested parent is in the same clock-controller and + * the id is SCLK_MAC ("clk_gmac"), switch to the internal clock. + */ + if ((parent->dev == clk->dev) && (parent->id == SCLK_MAC)) { + debug("%s: switching RGMII to SCLK_MAC\n", __func__); + rk_clrreg(&priv->cru->clksel_con[19], BIT(4)); + return 0; + } + + /* + * Otherwise, we need to check the clock-output-names of the + * requested parent to see if the requested id is "clkin_gmac". + */ + ret = dev_read_string_index(parent->dev, "clock-output-names", + parent->id, &clock_output_name); + if (ret < 0) + return -ENODATA; + + /* If this is "clkin_gmac", switch to the external clock input */ + if (!strcmp(clock_output_name, "clkin_gmac")) { + debug("%s: switching RGMII to CLKIN\n", __func__); + rk_setreg(&priv->cru->clksel_con[19], BIT(4)); + return 0; + } + + return -EINVAL; +} + +static int __maybe_unused rk3399_clk_set_parent(struct clk *clk, struct clk *parent) +{ + switch (clk->id) { + case SCLK_RMII_SRC: + return rk3399_gmac_set_parent(clk, parent); + } + + debug("%s: unsupported clk %ld\n", __func__, clk->id); + return -ENOENT; +} + static int rk3399_clk_enable(struct clk *clk) { switch (clk->id) { @@ -958,6 +997,16 @@ static int rk3399_clk_enable(struct clk *clk) case HCLK_HOST1: case HCLK_HOST1_ARB: return 0; + + case SCLK_MAC: + case SCLK_MAC_RX: + case SCLK_MAC_TX: + case SCLK_MACREF: + case SCLK_MACREF_OUT: + case ACLK_GMAC: + case PCLK_GMAC: + /* Required to successfully probe the Designware GMAC driver */ + return 0; } debug("%s: unsupported clk %ld\n", __func__, clk->id); @@ -967,9 +1016,91 @@ static int rk3399_clk_enable(struct clk *clk) static struct clk_ops rk3399_clk_ops = { .get_rate = rk3399_clk_get_rate, .set_rate = rk3399_clk_set_rate, +#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) + .set_parent = rk3399_clk_set_parent, +#endif .enable = rk3399_clk_enable, }; +#ifdef CONFIG_SPL_BUILD +static void rkclk_init(struct rk3399_cru *cru) +{ + u32 aclk_div; + u32 hclk_div; + u32 pclk_div; + + rk3399_configure_cpu(cru, APLL_L_600_MHZ); + /* + * some cru registers changed by bootrom, we'd better reset them to + * reset/default values described in TRM to avoid confusion in kernel. + * Please consider these three lines as a fix of bootrom bug. + */ + rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101); + rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f); + rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003); + + /* configure gpll cpll */ + rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg); + rkclk_set_pll(&cru->cpll_con[0], &cpll_init_cfg); + + /* configure perihp aclk, hclk, pclk */ + aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1; + assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); + + hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1; + assert((hclk_div + 1) * PERIHP_HCLK_HZ == + PERIHP_ACLK_HZ && (hclk_div < 0x4)); + + pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1; + assert((pclk_div + 1) * PERIHP_PCLK_HZ == + PERIHP_ACLK_HZ && (pclk_div < 0x7)); + + rk_clrsetreg(&cru->clksel_con[14], + PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK | + ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK, + pclk_div << PCLK_PERIHP_DIV_CON_SHIFT | + hclk_div << HCLK_PERIHP_DIV_CON_SHIFT | + ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT | + aclk_div << ACLK_PERIHP_DIV_CON_SHIFT); + + /* configure perilp0 aclk, hclk, pclk */ + aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1; + assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); + + hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1; + assert((hclk_div + 1) * PERILP0_HCLK_HZ == + PERILP0_ACLK_HZ && (hclk_div < 0x4)); + + pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1; + assert((pclk_div + 1) * PERILP0_PCLK_HZ == + PERILP0_ACLK_HZ && (pclk_div < 0x7)); + + rk_clrsetreg(&cru->clksel_con[23], + PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK | + ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK, + pclk_div << PCLK_PERILP0_DIV_CON_SHIFT | + hclk_div << HCLK_PERILP0_DIV_CON_SHIFT | + ACLK_PERILP0_PLL_SEL_GPLL << ACLK_PERILP0_PLL_SEL_SHIFT | + aclk_div << ACLK_PERILP0_DIV_CON_SHIFT); + + /* perilp1 hclk select gpll as source */ + hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1; + assert((hclk_div + 1) * PERILP1_HCLK_HZ == + GPLL_HZ && (hclk_div < 0x1f)); + + pclk_div = PERILP1_HCLK_HZ / PERILP1_HCLK_HZ - 1; + assert((pclk_div + 1) * PERILP1_HCLK_HZ == + PERILP1_HCLK_HZ && (hclk_div < 0x7)); + + rk_clrsetreg(&cru->clksel_con[25], + PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK | + HCLK_PERILP1_PLL_SEL_MASK, + pclk_div << PCLK_PERILP1_DIV_CON_SHIFT | + hclk_div << HCLK_PERILP1_DIV_CON_SHIFT | + HCLK_PERILP1_PLL_SEL_GPLL << HCLK_PERILP1_PLL_SEL_SHIFT); +} +#endif + static int rk3399_clk_probe(struct udevice *dev) { #ifdef CONFIG_SPL_BUILD @@ -998,11 +1129,29 @@ static int rk3399_clk_ofdata_to_platdata(struct udevice *dev) static int rk3399_clk_bind(struct udevice *dev) { int ret; + struct udevice *sys_child; + struct sysreset_reg *priv; /* The reset driver does not have a device node, so bind it here */ - ret = device_bind_driver(gd->dm_root, "rk3399_sysreset", "reset", &dev); + ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset", + &sys_child); + if (ret) { + debug("Warning: No sysreset driver: ret=%d\n", ret); + } else { + priv = malloc(sizeof(struct sysreset_reg)); + priv->glb_srst_fst_value = offsetof(struct rk3399_cru, + glb_srst_fst_value); + priv->glb_srst_snd_value = offsetof(struct rk3399_cru, + glb_srst_snd_value); + sys_child->priv = priv; + } + +#if CONFIG_IS_ENABLED(CONFIG_RESET_ROCKCHIP) + ret = offsetof(struct rk3399_cru, softrst_con[0]); + ret = rockchip_reset_bind(dev, ret, 21); if (ret) - printf("Warning: No RK3399 reset driver: ret=%d\n", ret); + debug("Warning: software reset driver bind faile\n"); +#endif return 0; } @@ -1097,6 +1246,8 @@ static ulong rk3399_pmuclk_get_rate(struct clk *clk) ulong rate = 0; switch (clk->id) { + case PLL_PPLL: + return PPLL_HZ; case PCLK_RKPWM_PMU: rate = rk3399_pwm_get_clk(priv->pmucru); break; @@ -1118,6 +1269,13 @@ static ulong rk3399_pmuclk_set_rate(struct clk *clk, ulong rate) ulong ret = 0; switch (clk->id) { + case PLL_PPLL: + /* + * This has already been set up and we don't want/need + * to change it here. Accept the request though, as the + * device-tree has this in an 'assigned-clocks' list. + */ + return PPLL_HZ; case SCLK_I2C0_PMU: case SCLK_I2C4_PMU: case SCLK_I2C8_PMU: @@ -1179,6 +1337,19 @@ static int rk3399_pmuclk_ofdata_to_platdata(struct udevice *dev) return 0; } +static int rk3399_pmuclk_bind(struct udevice *dev) +{ +#if CONFIG_IS_ENABLED(CONFIG_RESET_ROCKCHIP) + int ret; + + ret = offsetof(struct rk3399_pmucru, pmucru_softrst_con[0]); + ret = rockchip_reset_bind(dev, ret, 2); + if (ret) + debug("Warning: software reset driver bind faile\n"); +#endif + return 0; +} + static const struct udevice_id rk3399_pmuclk_ids[] = { { .compatible = "rockchip,rk3399-pmucru" }, { } @@ -1192,6 +1363,7 @@ U_BOOT_DRIVER(rockchip_rk3399_pmuclk) = { .ofdata_to_platdata = rk3399_pmuclk_ofdata_to_platdata, .ops = &rk3399_pmuclk_ops, .probe = rk3399_pmuclk_probe, + .bind = rk3399_pmuclk_bind, #if CONFIG_IS_ENABLED(OF_PLATDATA) .platdata_auto_alloc_size = sizeof(struct rk3399_pmuclk_plat), #endif