Expand the list of compatible devices this driver works with. Increase
the target frequency from 1 to 10 MHz because these SoCs are plenty fast enough to benefit from the extra event timer resolution.
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@ -95,7 +95,7 @@ struct imx_gpt_softc *imx_gpt_sc = NULL;
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static const int imx_gpt_delay_count = 78;
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/* Try to divide down an available fast clock to this frequency. */
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#define TARGET_FREQUENCY 1000000
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#define TARGET_FREQUENCY 10000000
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/* Don't try to set an event timer period smaller than this. */
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#define MIN_ET_PERIOD 10LLU
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@ -107,16 +107,26 @@ static struct resource_spec imx_gpt_spec[] = {
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{ -1, 0 }
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};
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static struct ofw_compat_data compat_data[] = {
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{"fsl,imx6q-gpt", 1},
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{"fsl,imx53-gpt", 1},
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{"fsl,imx51-gpt", 1},
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{"fsl,imx31-gpt", 1},
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{"fsl,imx27-gpt", 1},
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{"fsl,imx25-gpt", 1},
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{NULL, 0}
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};
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static int
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imx_gpt_probe(device_t dev)
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{
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if (!ofw_bus_is_compatible(dev, "fsl,imx51-gpt") &&
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!ofw_bus_is_compatible(dev, "fsl,imx53-gpt"))
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return (ENXIO);
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if (ofw_bus_search_compatible(dev, compat_data)->ocd_data != 0) {
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device_set_desc(dev, "Freescale i.MX GPT timer");
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return (BUS_PROBE_DEFAULT);
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}
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device_set_desc(dev, "Freescale i.MX GPT timer");
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return (BUS_PROBE_DEFAULT);
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return (ENXIO);
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}
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static int
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@ -142,10 +152,7 @@ imx_gpt_attach(device_t dev)
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* we're running on. Eventually we could allow selection from the fdt;
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* the code in this driver will cope with any clock frequency.
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*/
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if (ofw_bus_is_compatible(dev, "fsl,imx6-gpt"))
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sc->sc_clksrc = GPT_CR_CLKSRC_24M;
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else
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sc->sc_clksrc = GPT_CR_CLKSRC_IPG;
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sc->sc_clksrc = GPT_CR_CLKSRC_IPG;
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ctlreg = 0;
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