Add powergate use on T114 to complete resetting of DC.
Signed-off-by: Svyatoslav Ryhel clamor95@gmail.com --- drivers/video/tegra20/tegra-dc.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/drivers/video/tegra20/tegra-dc.c b/drivers/video/tegra20/tegra-dc.c index 35abb6fe46..9a18e38cd8 100644 --- a/drivers/video/tegra20/tegra-dc.c +++ b/drivers/video/tegra20/tegra-dc.c @@ -22,6 +22,7 @@ #include <asm/arch/clock.h> #include <asm/arch/funcmux.h> #include <asm/arch/pinmux.h> +#include <asm/arch/powergate.h> #include <asm/arch/pwm.h>
#include "tegra-dc.h" @@ -32,6 +33,7 @@ DECLARE_GLOBAL_DATA_PTR; struct tegra_dc_soc_info { bool has_timer; bool has_rgb; + bool has_pgate; };
/* Information about the display controller */ @@ -360,6 +362,28 @@ static int tegra_lcd_probe(struct udevice *dev)
clock_disable(priv->dc_clk[0]);
+ if (priv->soc->has_pgate) { + uint powergate; + + if (priv->pipe) + powergate = TEGRA_POWERGATE_DISB; + else + powergate = TEGRA_POWERGATE_DIS; + + ret = tegra_powergate_power_off(powergate); + if (ret < 0) { + log_err("failed to power off DISP gate: %d", ret); + return ret; + } + + ret = tegra_powergate_sequence_power_up(powergate, + priv->dc_clk[0]); + if (ret < 0) { + log_err("failed to power up DISP gate: %d", ret); + return ret; + } + } + /* Reset everything set before */ reset_assert(&reset_ctl); mdelay(4); @@ -510,16 +534,19 @@ static const struct video_ops tegra_lcd_ops = { static const struct tegra_dc_soc_info tegra20_dc_soc_info = { .has_timer = true, .has_rgb = true, + .has_pgate = false, };
static const struct tegra_dc_soc_info tegra30_dc_soc_info = { .has_timer = false, .has_rgb = true, + .has_pgate = false, };
static const struct tegra_dc_soc_info tegra114_dc_soc_info = { .has_timer = false, .has_rgb = false, + .has_pgate = true, };
static const struct udevice_id tegra_lcd_ids[] = {