kopia lustrzana https://github.com/hoglet67/RGBtoHDMI
Pi Firmware: call recalculate_hdmi_clock() on startup
Change-Id: I8a967044980398edb8e3aec65b90692f10141390pull/11/head
rodzic
b620e7d49e
commit
dded2aec8c
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@ -118,7 +118,7 @@ static framebuf *fbp = (framebuf *) (UNCACHED_MEM_BASE + 0x10000);
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// Source 1 = OSC = 19.2MHz
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// Source 1 = OSC = 19.2MHz
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// Source 4 = PLLA = 0MHz
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// Source 4 = PLLA = 0MHz
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// Source 5 = PLLC = core_freq * 3 = (384 * 3) = 1152
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// Source 5 = PLLC = core_freq * 3
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// Source 6 = PLLD = 500MHz
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// Source 6 = PLLD = 500MHz
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static void init_gpclk(int source, int divisor) {
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static void init_gpclk(int source, int divisor) {
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@ -362,6 +362,12 @@ static int calibrate_sampling_clock() {
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static void recalculate_hdmi_clock() {
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static void recalculate_hdmi_clock() {
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// The very first time we get called, vsync_time_ns has not been set
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// so exit gracefully
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if (vsync_time_ns == 0) {
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return;
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}
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// Dump the PLLH registers
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// Dump the PLLH registers
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log_info("PLLH: PDIV=%d NDIV=%d FRAC=%d AUX=%d RCAL=%d PIX=%d STS=%d",
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log_info("PLLH: PDIV=%d NDIV=%d FRAC=%d AUX=%d RCAL=%d PIX=%d STS=%d",
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(gpioreg[PLLH_CTRL] >> 12) & 0x7,
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(gpioreg[PLLH_CTRL] >> 12) & 0x7,
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@ -1065,9 +1071,12 @@ void rgb_to_hdmi_main() {
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capinfo = &default_capinfo;
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capinfo = &default_capinfo;
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// Measure the frame time and set a clock to 384MHz +- the error
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// Measure the frame time and set the sampling clock
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calibrate_sampling_clock();
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calibrate_sampling_clock();
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// Recalculate the HDMI clock (if the pllh property requires this)
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recalculate_hdmi_clock();
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// Determine initial mode
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// Determine initial mode
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mode7 = rgb_to_fb(capinfo, BIT_PROBE) & BIT_MODE7 & !m7disable;
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mode7 = rgb_to_fb(capinfo, BIT_PROBE) & BIT_MODE7 & !m7disable;
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