diff options
| author | Shashank Sharma <shashank.sharma@intel.com> | 2015-09-01 19:41:38 +0530 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-09-23 10:08:48 +0200 |
| commit | cfe01a5eba1ff5723f3a47895fb7e9d890edf157 (patch) | |
| tree | ae8741c7a9258f1aa98cf9e069558ca920d6bf11 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 83e3337204b2385d20e149c8fe91bb2719978df2 (diff) | |
| download | lwn-cfe01a5eba1ff5723f3a47895fb7e9d890edf157.tar.gz lwn-cfe01a5eba1ff5723f3a47895fb7e9d890edf157.zip | |
drm/i915/bxt: Enable BXT DSI PLL
This patch adds new functions for BXT clock and PLL programming.
They are:
1. configure_dsi_pll for BXT.
This function does the basic math and generates the divider ratio
based on requested pixclock, and program clock registers.
2. enable_dsi_pll function.
This function programs the calculated clock values on the PLL.
3. intel_enable_dsi_pll
Wrapper function to use same code for multiple platforms. It checks the
platform and calls appropriate core pll enable function.
v2: Fixed Jani's review comments. Macros are adjusted as per convention.
v3: Removed a redundant change wrt code comment.
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index dd3d235b27ac..4ef16aabc30a 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7507,6 +7507,28 @@ enum skl_disp_power_wells { #define _MIPI_PORT(port, a, c) _PORT3(port, a, 0, c) /* ports A and C only */ +#define BXT_DSI_PLL_CTL 0x161000 +#define BXT_DSI_PLL_PVD_RATIO_SHIFT 16 +#define BXT_DSI_PLL_PVD_RATIO_MASK (3 << BXT_DSI_PLL_PVD_RATIO_SHIFT) +#define BXT_DSI_PLL_PVD_RATIO_1 (1 << BXT_DSI_PLL_PVD_RATIO_SHIFT) +#define BXT_DSIC_16X_BY2 (1 << 10) +#define BXT_DSIC_16X_BY3 (2 << 10) +#define BXT_DSIC_16X_BY4 (3 << 10) +#define BXT_DSIA_16X_BY2 (1 << 8) +#define BXT_DSIA_16X_BY3 (2 << 8) +#define BXT_DSIA_16X_BY4 (3 << 8) +#define BXT_DSI_FREQ_SEL_SHIFT 8 +#define BXT_DSI_FREQ_SEL_MASK (0xF << BXT_DSI_FREQ_SEL_SHIFT) + +#define BXT_DSI_PLL_RATIO_MAX 0x7D +#define BXT_DSI_PLL_RATIO_MIN 0x22 +#define BXT_DSI_PLL_RATIO_MASK 0xFF +#define BXT_REF_CLOCK_KHZ 19500 + +#define BXT_DSI_PLL_ENABLE 0x46080 +#define BXT_DSI_PLL_DO_ENABLE (1 << 31) +#define BXT_DSI_PLL_LOCKED (1 << 30) + #define _MIPIA_PORT_CTRL (VLV_DISPLAY_BASE + 0x61190) #define _MIPIC_PORT_CTRL (VLV_DISPLAY_BASE + 0x61700) #define MIPI_PORT_CTRL(port) _MIPI_PORT(port, _MIPIA_PORT_CTRL, _MIPIC_PORT_CTRL) |