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Message-ID: Date: Thu, 7 May 2020 19:36:52 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <92ccd154d49ea2bb319589404ddf6045f5372f70.1587742492.git-series.maxime@cerno.tech> Content-Language: en-US X-Provags-ID: V03:K1:ShyLV08/cgkmHFo95q6BJOoxPMAWPfmRNb5Ryauds2XOC2hEg2x 40MxJ9nizX2/2z0Q9tm4aQauhtE24fotyBvCQaQQKR+IHS+dGs4hvjyIRdgj/FibN/KUpMk qgUGu6/69vQqgx+aZjculwlf+yTdL0YwOXNEf9rlLIiFDnYQww7vSaxfoLYuxK2QvAQ/wXE UVycuINNVOreMdR+zcMhA== X-UI-Out-Filterresults: notjunk:1;V03:K0:wvoGlqZpvug=:6KrAE9G1zZnW55NtWpsIgo rqykdFMU2cz1eycfDK1Yk2Yqe/DlUrNkRiz76/8xovfuXxZaNMLqQJIapXYLXWz94veh/7l6d IqD9FnaQWikRF6WUtko/ueumZXHdRWya3yzNLjwbfLbspEZSQj7OdfCluEn18Y0U37LrbEde+ ywQOgxgeYIns3C9w8vOAjjVvj3ejkjMrOPgOdFgFShmZhCq3RXDx/1k4Y0nLP4uUNIE195BEL cFUKIHIKwwo4Mf4ddrS8c+6HSIHOgg6hc9j8v85l78jhAyqwbasl32dg4pXvBJ1CGv1TMyJ/3 r2tIMErDZ67lnmqlNmui3rKQSKrKcDLjySDqB0q09nd3DXDvW9Fd2ehVmJ5QNb5wg4nx1GnMu 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linux-rpi-kernel@lists.infradead.org, Phil Elwell , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Maxime, Am 24.04.20 um 17:35 schrieb Maxime Ripard: > Now that the driver is ready for it, let's bring in the HDMI controllers > variants for the BCM2711. > > Signed-off-by: Maxime Ripard > --- > drivers/gpu/drm/vc4/vc4_hdmi.c | 276 +++++++++++++++++- > drivers/gpu/drm/vc4/vc4_hdmi.h | 35 ++- > drivers/gpu/drm/vc4/vc4_hdmi_phy.c | 468 +++++++++++++++++++++++++++++- > drivers/gpu/drm/vc4/vc4_hdmi_regs.h | 201 ++++++++++++- > 4 files changed, 980 insertions(+) ... > + > +#define VC4_HDMI_RM_FORMAT_SHIFT_SHIFT 24 > +#define VC4_HDMI_RM_FORMAT_SHIFT_MASK VC4_MASK(25, 24) > + > +#define OSCILLATOR_FREQUENCY 54000000 Just want to mention that the oscillator frequency of the BCM2711 is available via bcm2711.dtsi > + > void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, struct drm_display_mode *mode) > { > /* PHY should be in reset, like > @@ -38,3 +155,354 @@ void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi) > HDMI_READ(HDMI_TX_PHY_CTL_0) | > VC4_HDMI_TX_PHY_RNG_PWRDN); > } > + > +static unsigned long long > +phy_get_vco_freq(unsigned long long clock, u8 *vco_sel, u8 *vco_div) > +{ > + unsigned long long vco_freq = clock; > + unsigned int _vco_div = 0; > + unsigned int _vco_sel = 0; > + > + while (vco_freq < 3000000000ULL) { > + _vco_div++; > + vco_freq = clock * _vco_div * 10; > + } > + > + if (vco_freq > 4500000000ULL) > + _vco_sel = 1; > + > + *vco_sel = _vco_sel; > + *vco_div = _vco_div; > + > + return vco_freq; > +} > + > +static u8 phy_get_cp_current(unsigned long vco_freq) > +{ > + if (vco_freq < 3700000000ULL) > + return 0x1c; > + > + return 0xc8; The vendor tree contains a patch [1] for this return value, which said that the value is a typo and causes warnings because the value must be 6 bit. Btw that my tests with Raspberry Pi 3 and 4 were good so far. [1] - https://github.com/raspberrypi/linux/commit/71d5db1b342097fa4dc561202837beb934648b25 > +} > + _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel