Searched hist:dddccd6913142e0ba63ce6e529c38651c2ab0197 (Results 1 – 3 of 3) sorted by relevance
| /rk3399_rockchip-uboot/drivers/video/ |
| H A D | ssd2828.c | dddccd6913142e0ba63ce6e529c38651c2ab0197 Mon Jan 19 03:23:35 UTC 2015 Siarhei Siamashka <siarhei.siamashka@gmail.com> video: ssd2828: Allow using 'pclk' as the PLL clock source
Instead of using the internal 'tx_clk' clock source, it is also possible to use the pixel clock signal from the parallel LCD interface ('pclk') as the reference clock for PLL.
The 'tx_clk' clock speed may be different on different boards/devices (the allowed range is 8MHz - 30MHz). Which is not very convenient, especially considering the need to know the exact 'tx_clk' clock speed. This clock speed may be difficult to identify without having device schematics and/or accurate documentation/sources every time.
Using 'pclk' is free from all these problems.
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com> Acked-by: Anatolij Gustschin <agust@denx.de> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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| H A D | ssd2828.h | dddccd6913142e0ba63ce6e529c38651c2ab0197 Mon Jan 19 03:23:35 UTC 2015 Siarhei Siamashka <siarhei.siamashka@gmail.com> video: ssd2828: Allow using 'pclk' as the PLL clock source
Instead of using the internal 'tx_clk' clock source, it is also possible to use the pixel clock signal from the parallel LCD interface ('pclk') as the reference clock for PLL.
The 'tx_clk' clock speed may be different on different boards/devices (the allowed range is 8MHz - 30MHz). Which is not very convenient, especially considering the need to know the exact 'tx_clk' clock speed. This clock speed may be difficult to identify without having device schematics and/or accurate documentation/sources every time.
Using 'pclk' is free from all these problems.
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com> Acked-by: Anatolij Gustschin <agust@denx.de> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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| H A D | Kconfig | dddccd6913142e0ba63ce6e529c38651c2ab0197 Mon Jan 19 03:23:35 UTC 2015 Siarhei Siamashka <siarhei.siamashka@gmail.com> video: ssd2828: Allow using 'pclk' as the PLL clock source
Instead of using the internal 'tx_clk' clock source, it is also possible to use the pixel clock signal from the parallel LCD interface ('pclk') as the reference clock for PLL.
The 'tx_clk' clock speed may be different on different boards/devices (the allowed range is 8MHz - 30MHz). Which is not very convenient, especially considering the need to know the exact 'tx_clk' clock speed. This clock speed may be difficult to identify without having device schematics and/or accurate documentation/sources every time.
Using 'pclk' is free from all these problems.
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com> Acked-by: Anatolij Gustschin <agust@denx.de> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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