On Tue, Nov 24, 2009 at 05:04:17PM +0100, Juergen Beisert wrote:
> Adding IPU clock query functions for i.MX31 and i.MX35
> (used to generate their LCD timing).
>
> BTW: All functions are declared with the 'ulong' return type, but some are
> defined with 'unsigned long'. And yes, its the same, but IMHO one type should
> be used for all.
>
> Signed-off-by: Juergen Beisert <jbe@xxxxxxxxxxxxxx>
Applied
Sascha
>
> ---
> arch/arm/mach-imx/speed-imx31.c | 12 ++++++++++++
> arch/arm/mach-imx/speed-imx35.c | 31 +++++++++++++++++++++++++++++++
> 2 files changed, 43 insertions(+)
>
> Index: u-boot-v2/arch/arm/mach-imx/speed-imx35.c
> ===================================================================
> --- u-boot-v2.orig/arch/arm/mach-imx/speed-imx35.c
> +++ u-boot-v2/arch/arm/mach-imx/speed-imx35.c
> @@ -118,6 +118,37 @@ unsigned long imx_get_gptclk(void)
> return imx_get_ipgclk();
> }
>
> +/**
> + * Calculate the current pixel clock speed (aka HSP or IPU)
> + * @return 0 on failure or current frequency in Hz
> + */
> +unsigned long imx_get_lcdclk(void)
> +{
> + unsigned long hsp_podf = (readl(IMX_CCM_BASE + CCM_PDR0) >> 20) & 0x03;
> + unsigned long base_clk = imx_get_armclk();
> +
> + if (base_clk > 400 * 1000 * 1000) {
> + switch(hsp_podf) {
> + case 0:
> + return base_clk >> 2;
> + case 1:
> + return base_clk >> 3;
> + case 2:
> + return base_clk / 3;
> + }
> + } else {
> + switch(hsp_podf) {
> + case 0:
> + case 2:
> + return base_clk / 3;
> + case 1:
> + return base_clk / 6;
> + }
> + }
> +
> + return 0;
> +}
> +
> unsigned long imx_get_uartclk(void)
> {
> unsigned long pdr3 = readl(IMX_CCM_BASE + CCM_PDR3);
> Index: u-boot-v2/arch/arm/mach-imx/speed-imx31.c
> ===================================================================
> --- u-boot-v2.orig/arch/arm/mach-imx/speed-imx31.c
> +++ u-boot-v2/arch/arm/mach-imx/speed-imx31.c
> @@ -41,6 +41,18 @@ ulong imx_get_mcu_main_clk(void)
> return imx_get_mpl_dpdgck_clk();
> }
>
> +/**
> + * Calculate the current pixel clock speed (aka HSP or IPU)
> + * @return 0 on failure or current frequency in Hz
> + */
> +ulong imx_get_lcdclk(void)
> +{
> + ulong hsp_podf = (readl(IMX_CCM_BASE + CCM_PDR0) >> 11) & 0x03;
> + ulong base_clk = imx_get_mcu_main_clk();
> +
> + return base_clk / (hsp_podf + 1);
> +}
> +
> ulong imx_get_perclk1(void)
> {
> u32 freq = imx_get_mcu_main_clk();
>
> --
> Pengutronix e.K. | Juergen Beisert |
> Linux Solutions for Science and Industry | Phone: +49-8766-939 228 |
> Vertretung Sued/Muenchen, Germany | Fax: +49-5121-206917-5555 |
> Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de/ |
>
> _______________________________________________
> u-boot-v2 mailing list
> u-boot-v2@xxxxxxxxxxxxxxxxxxx
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>
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
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