[PATCH 5/6] clk: tegra: Add support for Tegra132 CAR clocks

Peter De Schrijver
2014-07-15T15:24:35Z

Tegra132 CAR supports almost the same clocks as Tegra124 CAR. This patch
deals with the small differences.

--
I'm not entirely sure why the soc_therm clock needs to be enabled on Tegra132,
but turning it off results in a system hang. I presume this might be because
of fastboot initializing soc_therm.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
---
drivers/clk/tegra/clk-tegra124.c | 32 ++++++++++++++++++++++++++++++++
1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c
index 80efe51..b857aab 100644
--- a/drivers/clk/tegra/clk-tegra124.c
+++ b/drivers/clk/tegra/clk-tegra124.c
@@ -1369,6 +1369,7 @@ static struct tegra_clk_init_table init_table[] __initdata = {
{TEGRA124_CLK_XUSB_HS_SRC, TEGRA124_CLK_PLL_U_60M, 60000000, 0},
{TEGRA124_CLK_XUSB_FALCON_SRC, TEGRA124_CLK_PLL_RE_OUT, 224000000, 0},
{TEGRA124_CLK_XUSB_HOST_SRC, TEGRA124_CLK_PLL_RE_OUT, 112000000, 0},
+ {TEGRA124_CLK_SOC_THERM, TEGRA124_CLK_PLL_P, 51000000, 0},
/* This MUST be the last entry. */
{TEGRA124_CLK_CLK_MAX, TEGRA124_CLK_CLK_MAX, 0, 0},
};
@@ -1378,9 +1379,25 @@ static void __init tegra124_clock_apply_init_table(void)
tegra_init_from_table(init_table, clks, TEGRA124_CLK_CLK_MAX);
}

+enum {
+ TEGRA124_CLK,
+ TEGRA132_CLK,
+};
+
+static const struct of_device_id tegra_clock_of_match[] = {
+ { .compatible = "nvidia,tegra124-car", .data = (void *)TEGRA124_CLK },
+ { .compatible = "nvidia,tegra132-car", .data = (void *)TEGRA132_CLK },
+ {},
+};
+
static void __init tegra124_clock_init(struct device_node *np)
{
struct device_node *node;
+ const struct of_device_id *match;
+ uintptr_t id;
+
+ match = of_match_node(tegra_clock_of_match, np);
+ id = (uintptr_t)match->data;

clk_base = of_iomap(np, 0);
if (!clk_base) {
@@ -1416,6 +1433,20 @@ static void __init tegra124_clock_init(struct device_node *np)
tegra_audio_clk_init(clk_base, pmc_base, tegra124_clks, &pll_a_params);
tegra_pmc_clk_init(pmc_base, tegra124_clks);

+ if (id == TEGRA132_CLK) {
+ int i;
+
+ tegra124_clks[tegra_clk_cclk_g].present = false;
+ tegra124_clks[tegra_clk_cclk_lp].present = false;
+ tegra124_clks[tegra_clk_pll_x].present = false;
+ tegra124_clks[tegra_clk_pll_x_out0].present = false;
+
+ /* Tegra132 requires the soc_therm clock to be always on */
+ for (i = 0; i < ARRAY_SIZE(init_table); i++) {
+ if (init_table[i].clk_id == TEGRA124_CLK_SOC_THERM)
+ init_table[i].state = 1;
+ }
+ }
tegra_super_clk_gen4_init(clk_base, pmc_base, tegra124_clks,
&pll_x_params);
tegra_add_of_provider(np);
@@ -1426,3 +1457,4 @@ static void __init tegra124_clock_init(struct device_node *np)
tegra_cpu_car_ops = &tegra124_cpu_car_ops;
}
CLK_OF_DECLARE(tegra124, "nvidia,tegra124-car", tegra124_clock_init);
+CLK_OF_DECLARE(tegra132, "nvidia,tegra132-car", tegra124_clock_init);
--
1.7.7.rc0.72.g4b5ea.dirty