leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tegra: add PCI Express clocks

Browse Source 
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
CC: Gary King <GKing@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
This commit is contained in:
Mike Rapoport 2010-09-27 11:26:32 +02:00 committed by Colin Cross
parent 4de3a8fa33
commit 8d685bc5e5
1 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
arch/arm/mach-tegra/tegra2_clocks.c
View File

@ -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),