diff options
Diffstat (limited to 'drivers/clk/samsung/clk-exynos3250.c')
| -rw-r--r-- | drivers/clk/samsung/clk-exynos3250.c | 202 |
1 files changed, 199 insertions, 3 deletions
diff --git a/drivers/clk/samsung/clk-exynos3250.c b/drivers/clk/samsung/clk-exynos3250.c index dc85f8e7a2d..6e6cca39208 100644 --- a/drivers/clk/samsung/clk-exynos3250.c +++ b/drivers/clk/samsung/clk-exynos3250.c @@ -110,7 +110,14 @@ enum exynos3250_plls { nr_plls }; +/* list of PLLs in DMC block to be registered */ +enum exynos3250_dmc_plls { + bpll, epll, + nr_dmc_plls +}; + static void __iomem *reg_base; +static void __iomem *dmc_reg_base; /* * Support for CMU save/restore across system suspends @@ -266,6 +273,7 @@ PNAME(group_sclk_cam_blk_p) = { "xxti", "xusbxti", "none", "none", "none", "none", "div_mpll_pre", "mout_epll_user", "mout_vpll", + "none", "none", "none", "div_cam_blk_320", }; PNAME(group_sclk_fimd0_p) = { "xxti", "xusbxti", "m_bitclkhsdiv4_2l", "none", @@ -353,8 +361,8 @@ static struct samsung_mux_clock mux_clks[] __initdata = { /* SRC_FSYS */ MUX(CLK_MOUT_TSADC, "mout_tsadc", group_sclk_p, SRC_FSYS, 28, 4), - MUX(CLK_MOUT_MMC1, "mout_mmc1", group_sclk_p, SRC_FSYS, 4, 3), - MUX(CLK_MOUT_MMC0, "mout_mmc0", group_sclk_p, SRC_FSYS, 0, 3), + MUX(CLK_MOUT_MMC1, "mout_mmc1", group_sclk_p, SRC_FSYS, 4, 4), + MUX(CLK_MOUT_MMC0, "mout_mmc0", group_sclk_p, SRC_FSYS, 0, 4), /* SRC_PERIL0 */ MUX(CLK_MOUT_UART1, "mout_uart1", group_sclk_p, SRC_PERIL0, 4, 4), @@ -423,7 +431,7 @@ static struct samsung_div_clock div_clks[] __initdata = { DIV(CLK_DIV_SPI1_ISP, "div_spi1_isp", "mout_spi1_isp", DIV_ISP, 16, 4), DIV_F(CLK_DIV_SPI0_ISP_PRE, "div_spi0_isp_pre", "div_spi0_isp", DIV_ISP, 8, 8, CLK_SET_RATE_PARENT, 0), - DIV(CLK_DIV_SPI0_ISP, "div_spi0_isp", "mout_spi0_isp", DIV_ISP, 0, 4), + DIV(CLK_DIV_SPI0_ISP, "div_spi0_isp", "mout_spi0_isp", DIV_ISP, 4, 4), /* DIV_FSYS0 */ DIV_F(CLK_DIV_TSADC_PRE, "div_tsadc_pre", "div_tsadc", DIV_FSYS0, 8, 8, @@ -724,6 +732,25 @@ static struct samsung_pll_rate_table exynos3250_pll_rates[] = { { /* sentinel */ } }; +/* EPLL */ +static struct samsung_pll_rate_table exynos3250_epll_rates[] = { + PLL_36XX_RATE(800000000, 200, 3, 1, 0), + PLL_36XX_RATE(288000000, 96, 2, 2, 0), + PLL_36XX_RATE(192000000, 128, 2, 3, 0), + PLL_36XX_RATE(144000000, 96, 2, 3, 0), + PLL_36XX_RATE( 96000000, 128, 2, 4, 0), + PLL_36XX_RATE( 84000000, 112, 2, 4, 0), + PLL_36XX_RATE( 80000004, 106, 2, 4, 43691), + PLL_36XX_RATE( 73728000, 98, 2, 4, 19923), + PLL_36XX_RATE( 67737598, 270, 3, 5, 62285), + PLL_36XX_RATE( 65535999, 174, 2, 5, 49982), + PLL_36XX_RATE( 50000000, 200, 3, 5, 0), + PLL_36XX_RATE( 49152002, 131, 2, 5, 4719), + PLL_36XX_RATE( 48000000, 128, 2, 5, 0), + PLL_36XX_RATE( 45158401, 180, 3, 5, 41524), + { /* sentinel */ } +}; + /* VPLL */ static struct samsung_pll_rate_table exynos3250_vpll_rates[] = { PLL_36XX_RATE(600000000, 100, 2, 1, 0), @@ -821,3 +848,172 @@ static void __init exynos3250_cmu_init(struct device_node *np) samsung_clk_of_add_provider(np, ctx); } CLK_OF_DECLARE(exynos3250_cmu, "samsung,exynos3250-cmu", exynos3250_cmu_init); + +/* + * CMU DMC + */ + +#define BPLL_LOCK 0x0118 +#define BPLL_CON0 0x0218 +#define BPLL_CON1 0x021c +#define BPLL_CON2 0x0220 +#define SRC_DMC 0x0300 +#define DIV_DMC1 0x0504 +#define GATE_BUS_DMC0 0x0700 +#define GATE_BUS_DMC1 0x0704 +#define GATE_BUS_DMC2 0x0708 +#define GATE_BUS_DMC3 0x070c +#define GATE_SCLK_DMC 0x0800 +#define GATE_IP_DMC0 0x0900 +#define GATE_IP_DMC1 0x0904 +#define EPLL_LOCK 0x1110 +#define EPLL_CON0 0x1114 +#define EPLL_CON1 0x1118 +#define EPLL_CON2 0x111c +#define SRC_EPLL 0x1120 + +/* + * Support for CMU save/restore across system suspends + */ +#ifdef CONFIG_PM_SLEEP +static struct samsung_clk_reg_dump *exynos3250_dmc_clk_regs; + +static unsigned long exynos3250_cmu_dmc_clk_regs[] __initdata = { + BPLL_LOCK, + BPLL_CON0, + BPLL_CON1, + BPLL_CON2, + SRC_DMC, + DIV_DMC1, + GATE_BUS_DMC0, + GATE_BUS_DMC1, + GATE_BUS_DMC2, + GATE_BUS_DMC3, + GATE_SCLK_DMC, + GATE_IP_DMC0, + GATE_IP_DMC1, + EPLL_LOCK, + EPLL_CON0, + EPLL_CON1, + EPLL_CON2, + SRC_EPLL, +}; + +static int exynos3250_dmc_clk_suspend(void) +{ + samsung_clk_save(dmc_reg_base, exynos3250_dmc_clk_regs, + ARRAY_SIZE(exynos3250_cmu_dmc_clk_regs)); + return 0; +} + +static void exynos3250_dmc_clk_resume(void) +{ + samsung_clk_restore(dmc_reg_base, exynos3250_dmc_clk_regs, + ARRAY_SIZE(exynos3250_cmu_dmc_clk_regs)); +} + +static struct syscore_ops exynos3250_dmc_clk_syscore_ops = { + .suspend = exynos3250_dmc_clk_suspend, + .resume = exynos3250_dmc_clk_resume, +}; + +static void exynos3250_dmc_clk_sleep_init(void) +{ + exynos3250_dmc_clk_regs = + samsung_clk_alloc_reg_dump(exynos3250_cmu_dmc_clk_regs, + ARRAY_SIZE(exynos3250_cmu_dmc_clk_regs)); + if (!exynos3250_dmc_clk_regs) { + pr_warn("%s: Failed to allocate sleep save data\n", __func__); + goto err; + } + + register_syscore_ops(&exynos3250_dmc_clk_syscore_ops); + return; +err: + kfree(exynos3250_dmc_clk_regs); +} +#else +static inline void exynos3250_dmc_clk_sleep_init(void) { } +#endif + +PNAME(mout_epll_p) = { "fin_pll", "fout_epll", }; +PNAME(mout_bpll_p) = { "fin_pll", "fout_bpll", }; +PNAME(mout_mpll_mif_p) = { "fin_pll", "sclk_mpll_mif", }; +PNAME(mout_dphy_p) = { "mout_mpll_mif", "mout_bpll", }; + +static struct samsung_mux_clock dmc_mux_clks[] __initdata = { + /* + * NOTE: Following table is sorted by register address in ascending + * order and then bitfield shift in descending order, as it is done + * in the User's Manual. When adding new entries, please make sure + * that the order is preserved, to avoid merge conflicts and make + * further work with defined data easier. + */ + + /* SRC_DMC */ + MUX(CLK_MOUT_MPLL_MIF, "mout_mpll_mif", mout_mpll_mif_p, SRC_DMC, 12, 1), + MUX(CLK_MOUT_BPLL, "mout_bpll", mout_bpll_p, SRC_DMC, 10, 1), + MUX(CLK_MOUT_DPHY, "mout_dphy", mout_dphy_p, SRC_DMC, 8, 1), + MUX(CLK_MOUT_DMC_BUS, "mout_dmc_bus", mout_dphy_p, SRC_DMC, 4, 1), + + /* SRC_EPLL */ + MUX(CLK_MOUT_EPLL, "mout_epll", mout_epll_p, SRC_EPLL, 4, 1), +}; + +static struct samsung_div_clock dmc_div_clks[] __initdata = { + /* + * NOTE: Following table is sorted by register address in ascending + * order and then bitfield shift in descending order, as it is done + * in the User's Manual. When adding new entries, please make sure + * that the order is preserved, to avoid merge conflicts and make + * further work with defined data easier. + */ + + /* DIV_DMC1 */ + DIV(CLK_DIV_DMC, "div_dmc", "div_dmc_pre", DIV_DMC1, 27, 3), + DIV(CLK_DIV_DPHY, "div_dphy", "mout_dphy", DIV_DMC1, 23, 3), + DIV(CLK_DIV_DMC_PRE, "div_dmc_pre", "mout_dmc_bus", DIV_DMC1, 19, 2), + DIV(CLK_DIV_DMCP, "div_dmcp", "div_dmcd", DIV_DMC1, 15, 3), + DIV(CLK_DIV_DMCD, "div_dmcd", "div_dmc", DIV_DMC1, 11, 3), +}; + +static struct samsung_pll_clock exynos3250_dmc_plls[nr_dmc_plls] __initdata = { + [bpll] = PLL(pll_35xx, CLK_FOUT_BPLL, "fout_bpll", "fin_pll", + BPLL_LOCK, BPLL_CON0, NULL), + [epll] = PLL(pll_36xx, CLK_FOUT_EPLL, "fout_epll", "fin_pll", + EPLL_LOCK, EPLL_CON0, NULL), +}; + +static void __init exynos3250_cmu_dmc_init(struct device_node *np) +{ + struct samsung_clk_provider *ctx; + + dmc_reg_base = of_iomap(np, 0); + if (!dmc_reg_base) + panic("%s: failed to map registers\n", __func__); + + ctx = samsung_clk_init(np, dmc_reg_base, NR_CLKS_DMC); + if (!ctx) + panic("%s: unable to allocate context.\n", __func__); + + exynos3250_dmc_plls[bpll].rate_table = exynos3250_pll_rates; + exynos3250_dmc_plls[epll].rate_table = exynos3250_epll_rates; + + pr_err("CLK registering epll bpll: %d, %d, %d, %d\n", + exynos3250_dmc_plls[bpll].rate_table[0].rate, + exynos3250_dmc_plls[bpll].rate_table[0].mdiv, + exynos3250_dmc_plls[bpll].rate_table[0].pdiv, + exynos3250_dmc_plls[bpll].rate_table[0].sdiv + ); + samsung_clk_register_pll(ctx, exynos3250_dmc_plls, + ARRAY_SIZE(exynos3250_dmc_plls), dmc_reg_base); + + samsung_clk_register_mux(ctx, dmc_mux_clks, ARRAY_SIZE(dmc_mux_clks)); + samsung_clk_register_div(ctx, dmc_div_clks, ARRAY_SIZE(dmc_div_clks)); + + exynos3250_dmc_clk_sleep_init(); + + samsung_clk_of_add_provider(np, ctx); +} +CLK_OF_DECLARE(exynos3250_cmu_dmc, "samsung,exynos3250-cmu-dmc", + exynos3250_cmu_dmc_init); |