drm/ast: Fix calculation of MCLK
Some braces were missing causing an incorrect calculation. Y.C. Chen from Aspeed provided me with the right formula which I tested on AST2400 and 2500. The MCLK isn't currently used by the driver (it will eventually to filter modes) so the issue isn't catastrophic. Also make the printed value a bit more meaningful Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Joel Stanley <joel@jms.id.au> Tested-by: Y.C. Chen <yc_chen@aspeedtech.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -354,7 +354,7 @@ static int ast_get_dram_info(struct drm_device *dev)
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div = 0x1;
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break;
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}
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ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
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ast->mclk = ref_pll * (num + 2) / ((denum + 2) * (div * 1000));
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return 0;
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}
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@ -498,7 +498,9 @@ int ast_driver_load(struct drm_device *dev, unsigned long flags)
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if (ret)
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goto out_free;
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ast->vram_size = ast_get_vram_info(dev);
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DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
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DRM_INFO("dram MCLK=%u Mhz type=%d bus_width=%d size=%08x\n",
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ast->mclk, ast->dram_type,
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ast->dram_bus_width, ast->vram_size);
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}
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if (need_post)
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