diff options
| author | Mike Rapoport <mike@compulab.co.il> | 2010-09-27 13:26:32 +0400 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2010-10-22 05:12:57 +0400 |
| commit | 8d685bc5e5cad76c05c9986c23a821c5bcef7c16 (patch) | |
| tree | 9043143988300ce72c4466c11eeabc0fc2f19b09 /arch/arm | |
| parent | 4de3a8fa334851e642d4889d6afa6e5d3daea10a (diff) | |
| download | linux-8d685bc5e5cad76c05c9986c23a821c5bcef7c16.tar.xz | |
tegra: add PCI Express clocks
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
CC: Gary King <GKing@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-tegra/tegra2_clocks.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c index cf1c9d0ef7e1..ae3b308e22a4 100644 --- a/arch/arm/mach-tegra/tegra2_clocks.c +++ b/arch/arm/mach-tegra/tegra2_clocks.c @@ -110,6 +110,8 @@ #define PLLD_MISC_DIV_RST (1<<23) #define PLLD_MISC_DCCON_SHIFT 12 +#define PLLE_MISC_READY (1 << 15) + #define PERIPH_CLK_TO_ENB_REG(c) ((c->clk_num / 32) * 4) #define PERIPH_CLK_TO_ENB_SET_REG(c) ((c->clk_num / 32) * 8) #define PERIPH_CLK_TO_ENB_BIT(c) (1 << (c->clk_num % 32)) @@ -567,6 +569,31 @@ static struct clk_ops tegra_pllx_ops = { .set_rate = tegra2_pll_clk_set_rate, }; +static int tegra2_plle_clk_enable(struct clk *c) +{ + u32 val; + + pr_debug("%s on clock %s\n", __func__, c->name); + + mdelay(1); + + val = clk_readl(c->reg + PLL_BASE); + if (!(val & PLLE_MISC_READY)) + return -EBUSY; + + val = clk_readl(c->reg + PLL_BASE); + val |= PLL_BASE_ENABLE | PLL_BASE_BYPASS; + clk_writel(val, c->reg + PLL_BASE); + + return 0; +} + +static struct clk_ops tegra_plle_ops = { + .init = tegra2_pll_clk_init, + .enable = tegra2_plle_clk_enable, + .set_rate = tegra2_pll_clk_set_rate, +}; + /* Clock divider ops */ static void tegra2_pll_div_clk_init(struct clk *c) { @@ -1317,6 +1344,23 @@ static struct clk tegra_pll_x = { .max_rate = 1000000000, }; +static struct clk_pll_table tegra_pll_e_table[] = { + { 12000000, 100000000, 200, 24, 1, 0 }, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_e = { + .name = "pll_e", + .flags = PLL_ALT_MISC_REG, + .ops = &tegra_plle_ops, + .input_min = 12000000, + .input_max = 12000000, + .max_rate = 100000000, + .parent = &tegra_clk_m, + .reg = 0xe8, + .pll_table = tegra_pll_e_table, +}; + static struct clk tegra_clk_d = { .name = "clk_d", .flags = PERIPH_NO_RESET, @@ -1626,6 +1670,9 @@ struct clk tegra_periph_clks[] = { PERIPH_CLK("csi", "csi", NULL, 52, 0, 72000000, mux_pllp_out3, 0), PERIPH_CLK("isp", "isp", NULL, 23, 0, 150000000, mux_clk_m, 0), /* same frequency as VI */ PERIPH_CLK("csus", "csus", NULL, 92, 0, 150000000, mux_clk_m, PERIPH_NO_RESET), + PERIPH_CLK("pex", NULL, "pex", 70, 0, 26000000, mux_clk_m, PERIPH_MANUAL_RESET), + PERIPH_CLK("afi", NULL, "afi", 72, 0, 26000000, mux_clk_m, PERIPH_MANUAL_RESET), + PERIPH_CLK("pcie_xclk", NULL, "pcie_xclk", 74, 0, 26000000, mux_clk_m, PERIPH_MANUAL_RESET), }; #define CLK_DUPLICATE(_name, _dev, _con) \ @@ -1679,6 +1726,7 @@ struct clk_lookup tegra_clk_lookups[] = { CLK(NULL, "pll_d_out0", &tegra_pll_d_out0), CLK(NULL, "pll_u", &tegra_pll_u), CLK(NULL, "pll_x", &tegra_pll_x), + CLK(NULL, "pll_e", &tegra_pll_e), CLK(NULL, "cclk", &tegra_clk_cclk), CLK(NULL, "sclk", &tegra_clk_sclk), CLK(NULL, "hclk", &tegra_clk_hclk), |