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MX5: Add AHB clock reporting and fix IPG clock reporting
Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Jason Liu <jason.hui@linaro.org> Acked-by: Jason Liu <jason.hui@linaro.org>
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@ -140,19 +140,36 @@ static u32 get_periph_clk(void)
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/* NOTREACHED */
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/* NOTREACHED */
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}
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}
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/*
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* Get the rate of ahb clock.
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*/
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static u32 get_ahb_clk(void)
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{
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uint32_t freq, div, reg;
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freq = get_periph_clk();
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reg = __raw_readl(&mxc_ccm->cbcdr);
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div = ((reg & MXC_CCM_CBCDR_AHB_PODF_MASK) >>
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MXC_CCM_CBCDR_AHB_PODF_OFFSET) + 1;
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return freq / div;
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}
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/*
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/*
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* Get the rate of ipg clock.
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* Get the rate of ipg clock.
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*/
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*/
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static u32 get_ipg_clk(void)
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static u32 get_ipg_clk(void)
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{
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{
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u32 ahb_podf, ipg_podf;
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uint32_t freq, reg, div;
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ahb_podf = __raw_readl(&mxc_ccm->cbcdr);
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freq = get_ahb_clk();
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ipg_podf = (ahb_podf & MXC_CCM_CBCDR_IPG_PODF_MASK) >>
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MXC_CCM_CBCDR_IPG_PODF_OFFSET;
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reg = __raw_readl(&mxc_ccm->cbcdr);
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ahb_podf = (ahb_podf & MXC_CCM_CBCDR_AHB_PODF_MASK) >>
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div = ((reg & MXC_CCM_CBCDR_IPG_PODF_MASK) >>
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MXC_CCM_CBCDR_AHB_PODF_OFFSET;
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MXC_CCM_CBCDR_IPG_PODF_OFFSET) + 1;
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return get_periph_clk() / ((ahb_podf + 1) * (ipg_podf + 1));
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return freq / div;
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}
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}
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/*
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/*
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@ -279,7 +296,7 @@ unsigned int mxc_get_clock(enum mxc_clock clk)
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case MXC_ARM_CLK:
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case MXC_ARM_CLK:
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return get_mcu_main_clk();
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return get_mcu_main_clk();
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case MXC_AHB_CLK:
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case MXC_AHB_CLK:
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break;
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return get_ahb_clk();
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case MXC_IPG_CLK:
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case MXC_IPG_CLK:
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return get_ipg_clk();
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return get_ipg_clk();
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case MXC_IPG_PERCLK:
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case MXC_IPG_PERCLK:
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@ -325,6 +342,7 @@ int do_mx5_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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freq = decode_pll(mxc_plls[PLL4_CLOCK], CONFIG_SYS_MX5_HCLK);
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freq = decode_pll(mxc_plls[PLL4_CLOCK], CONFIG_SYS_MX5_HCLK);
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printf("pll4: %dMHz\n", freq / 1000000);
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printf("pll4: %dMHz\n", freq / 1000000);
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#endif
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#endif
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printf("ahb clock : %dHz\n", mxc_get_clock(MXC_AHB_CLK));
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printf("ipg clock : %dHz\n", mxc_get_clock(MXC_IPG_CLK));
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printf("ipg clock : %dHz\n", mxc_get_clock(MXC_IPG_CLK));
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printf("ipg per clock : %dHz\n", mxc_get_clock(MXC_IPG_PERCLK));
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printf("ipg per clock : %dHz\n", mxc_get_clock(MXC_IPG_PERCLK));
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