diff options
Diffstat (limited to 'arch/arm/mach-tegra/tegra3_clocks.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra3_clocks.c | 45 |
1 files changed, 31 insertions, 14 deletions
diff --git a/arch/arm/mach-tegra/tegra3_clocks.c b/arch/arm/mach-tegra/tegra3_clocks.c index 0bceeeb9469f..2dfdb1db39b7 100644 --- a/arch/arm/mach-tegra/tegra3_clocks.c +++ b/arch/arm/mach-tegra/tegra3_clocks.c @@ -830,10 +830,6 @@ static int tegra3_cpu_clk_set_rate(struct clk *c, unsigned long rate) bool skip_to_backup = skip && (clk_get_rate_all_locked(c) >= SKIPPER_ENGAGE_RATE); - /* Hardware clock control is not possible on FPGA platforms. - Report success so that upper level layers don't complain - needlessly. */ -#ifndef CONFIG_TEGRA_FPGA_PLATFORM if (c->dvfs) { if (!c->dvfs->dvfs_rail) return -ENOSYS; @@ -912,7 +908,6 @@ out: tegra3_super_clk_skipper_update(c->parent, 2, 1); } clk_disable(c->u.cpu.main); -#endif return ret; } @@ -3007,12 +3002,17 @@ static int tegra3_clk_shared_bus_update(struct clk *bus) list_for_each_entry(c, &bus->shared_bus_list, u.shared_bus_user.node) { - /* Ignore requests from disabled users and from users with - fixed bus-to-client ratio */ - if (c->u.shared_bus_user.enabled) { + /* Ignore requests from disabled floor and bw users, and from + * auto-users riding the bus. Always honor ceiling users, even + * if they are disabled - we do not want to keep enabled parent + * bus just because ceiling is set. + */ + if (c->u.shared_bus_user.enabled || + (c->u.shared_bus_user.mode == SHARED_CEILING)) { switch (c->u.shared_bus_user.mode) { case SHARED_BW: - bw += c->u.shared_bus_user.rate; + if (bw < bus->max_rate) + bw += c->u.shared_bus_user.rate; break; case SHARED_CEILING: ceiling = min(c->u.shared_bus_user.rate, @@ -3025,6 +3025,16 @@ static int tegra3_clk_shared_bus_update(struct clk *bus) } } } + + if (bw) { + if (bus->flags & PERIPH_EMC_ENB) { + bw = tegra_emc_bw_efficiency ? + (bw / tegra_emc_bw_efficiency) : bus->max_rate; + bw = (bw < bus->max_rate / 100) ? + (bw * 100) : bus->max_rate; + } + bw = clk_round_rate_locked(bus, bw); + } rate = min(max(rate, bw), ceiling); old_rate = clk_get_rate_locked(bus); @@ -3073,6 +3083,10 @@ static long tegra_clk_shared_bus_round_rate(struct clk *c, unsigned long rate) if (c->u.shared_bus_user.mode == SHARED_AUTO) rate = 0; + /* BW users should not be rounded until aggregated */ + if (c->u.shared_bus_user.mode == SHARED_BW) + return rate; + return clk_round_rate(c->parent, rate); } @@ -3958,7 +3972,7 @@ static struct clk tegra_clk_pclk = { .reg_shift = 0, .ops = &tegra_bus_ops, .max_rate = 167000000, - .min_rate = 12000000, + .min_rate = 40000000, }; static struct raw_notifier_head sbus_rate_change_nh; @@ -4275,11 +4289,13 @@ struct clk tegra_list_clks[] = { PERIPH_CLK("tvdac", "tvdac", NULL, 53, 0x194, 220000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* requires min voltage */ PERIPH_CLK("disp1", "tegradc.0", NULL, 27, 0x138, 600000000, mux_pllp_pllm_plld_plla_pllc_plld2_clkm, MUX | MUX8), PERIPH_CLK("disp2", "tegradc.1", NULL, 26, 0x13c, 600000000, mux_pllp_pllm_plld_plla_pllc_plld2_clkm, MUX | MUX8), - PERIPH_CLK("usbd", "fsl-tegra-udc", NULL, 22, 0, 480000000, mux_clk_m, 0), /* requires min voltage */ + PERIPH_CLK("usbd", "tegra-udc.0", NULL, 22, 0, 480000000, mux_clk_m, 0), /* requires min voltage */ PERIPH_CLK("usb2", "tegra-ehci.1", NULL, 58, 0, 480000000, mux_clk_m, 0), /* requires min voltage */ PERIPH_CLK("usb3", "tegra-ehci.2", NULL, 59, 0, 480000000, mux_clk_m, 0), /* requires min voltage */ PERIPH_CLK("dsia", "tegradc.0", "dsia", 48, 0, 500000000, mux_plld_out0, 0), PERIPH_CLK_EX("dsib", "tegradc.1", "dsib", 82, 0xd0, 500000000, mux_plld_out0_plld2_out0, MUX | PLLD, &tegra_dsib_clk_ops), + PERIPH_CLK("dsi1-fixed", "tegradc.0", "dsi-fixed", 0, 0, 108000000, mux_pllp_out3, PERIPH_NO_ENB), + PERIPH_CLK("dsi2-fixed", "tegradc.1", "dsi-fixed", 0, 0, 108000000, mux_pllp_out3, PERIPH_NO_ENB), PERIPH_CLK("csi", "tegra_camera", "csi", 52, 0, 102000000, mux_pllp_out3, 0), PERIPH_CLK("isp", "tegra_camera", "isp", 23, 0, 150000000, mux_clk_m, 0), /* same frequency as VI */ PERIPH_CLK("csus", "tegra_camera", "csus", 92, 0, 150000000, mux_clk_m, PERIPH_NO_RESET), @@ -4297,7 +4313,7 @@ struct clk tegra_list_clks[] = { SHARED_CLK("avp.sclk", "tegra-avp", "sclk", &tegra_clk_sbus_cmplx, NULL, 0, 0), SHARED_CLK("bsea.sclk", "tegra-aes", "sclk", &tegra_clk_sbus_cmplx, NULL, 0, 0), - SHARED_CLK("usbd.sclk", "fsl-tegra-udc", "sclk", &tegra_clk_sbus_cmplx, NULL, 0, 0), + SHARED_CLK("usbd.sclk", "tegra-udc.0", "sclk", &tegra_clk_sbus_cmplx, NULL, 0, 0), SHARED_CLK("usb1.sclk", "tegra-ehci.0", "sclk", &tegra_clk_sbus_cmplx, NULL, 0, 0), SHARED_CLK("usb2.sclk", "tegra-ehci.1", "sclk", &tegra_clk_sbus_cmplx, NULL, 0, 0), SHARED_CLK("usb3.sclk", "tegra-ehci.2", "sclk", &tegra_clk_sbus_cmplx, NULL, 0, 0), @@ -4317,7 +4333,7 @@ struct clk tegra_list_clks[] = { SHARED_CLK("disp1.emc", "tegradc.0", "emc", &tegra_clk_emc, NULL, 0, SHARED_BW), SHARED_CLK("disp2.emc", "tegradc.1", "emc", &tegra_clk_emc, NULL, 0, SHARED_BW), SHARED_CLK("hdmi.emc", "hdmi", "emc", &tegra_clk_emc, NULL, 0, 0), - SHARED_CLK("usbd.emc", "fsl-tegra-udc", "emc", &tegra_clk_emc, NULL, 0, 0), + SHARED_CLK("usbd.emc", "tegra-udc.0", "emc", &tegra_clk_emc, NULL, 0, 0), SHARED_CLK("usb1.emc", "tegra-ehci.0", "emc", &tegra_clk_emc, NULL, 0, 0), SHARED_CLK("usb2.emc", "tegra-ehci.1", "emc", &tegra_clk_emc, NULL, 0, 0), SHARED_CLK("usb3.emc", "tegra-ehci.2", "emc", &tegra_clk_emc, NULL, 0, 0), @@ -4326,7 +4342,8 @@ struct clk tegra_list_clks[] = { SHARED_CLK("3d.emc", "tegra_gr3d", "emc", &tegra_clk_emc, NULL, 0, 0), SHARED_CLK("2d.emc", "tegra_gr2d", "emc", &tegra_clk_emc, NULL, 0, 0), SHARED_CLK("mpe.emc", "tegra_mpe", "emc", &tegra_clk_emc, NULL, 0, 0), - SHARED_CLK("camera.emc", "tegra_camera", "emc", &tegra_clk_emc, NULL, 0, 0), + SHARED_CLK("camera.emc", "tegra_camera", "emc", &tegra_clk_emc, NULL, 0, SHARED_BW), + SHARED_CLK("sdmmc4.emc", "sdhci-tegra.3", "emc", &tegra_clk_emc, NULL, 0, 0), SHARED_CLK("floor.emc", "floor.emc", NULL, &tegra_clk_emc, NULL, 0, 0), SHARED_CLK("host1x.cbus", "tegra_host1x", "host1x", &tegra_clk_cbus, "host1x", 2, SHARED_AUTO), |