ARM: keystone2: Use common definition for clk_get_rate
Since all the clocks are defined common, and has the same logic to get
the frequencies, use a common definition for for clk_get_rate().
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/arch/arm/mach-keystone/clock.c b/arch/arm/mach-keystone/clock.c
index 378ed10..fc3eadb 100644
--- a/arch/arm/mach-keystone/clock.c
+++ b/arch/arm/mach-keystone/clock.c
@@ -264,3 +264,142 @@
return get_max_speed(devspeed, DEV_SUPPORTED_SPEEDS);
}
+
+/**
+ * pll_freq_get - get pll frequency
+ * @pll: pll identifier
+ */
+static unsigned long pll_freq_get(int pll)
+{
+ unsigned long mult = 1, prediv = 1, output_div = 2;
+ unsigned long ret;
+ u32 tmp, reg;
+
+ if (pll == MAIN_PLL) {
+ ret = external_clk[sys_clk];
+ if (pllctl_reg_read(pll, ctl) & PLLCTL_PLLEN_MASK) {
+ /* PLL mode */
+ tmp = __raw_readl(KS2_MAINPLLCTL0);
+ prediv = (tmp & CFG_PLLCTL0_PLLD_MASK) + 1;
+ mult = ((tmp & CFG_PLLCTL0_PLLM_HI_MASK) >>
+ CFG_PLLCTL0_PLLM_SHIFT |
+ (pllctl_reg_read(pll, mult) &
+ PLLM_MULT_LO_MASK)) + 1;
+ output_div = ((pllctl_reg_read(pll, secctl) &
+ SECCTL_OP_DIV_MASK) >>
+ SECCTL_OP_DIV_SHIFT) + 1;
+
+ ret = ret / prediv / output_div * mult;
+ }
+ } else {
+ switch (pll) {
+ case PASS_PLL:
+ ret = external_clk[pa_clk];
+ reg = KS2_PASSPLLCTL0;
+ break;
+ case TETRIS_PLL:
+ ret = external_clk[tetris_clk];
+ reg = KS2_ARMPLLCTL0;
+ break;
+ case DDR3A_PLL:
+ ret = external_clk[ddr3a_clk];
+ reg = KS2_DDR3APLLCTL0;
+ break;
+ case DDR3B_PLL:
+ ret = external_clk[ddr3b_clk];
+ reg = KS2_DDR3BPLLCTL0;
+ break;
+ default:
+ return 0;
+ }
+
+ tmp = __raw_readl(reg);
+
+ if (!(tmp & CFG_PLLCTL0_BYPASS_MASK)) {
+ /* Bypass disabled */
+ prediv = (tmp & CFG_PLLCTL0_PLLD_MASK) + 1;
+ mult = ((tmp & CFG_PLLCTL0_PLLM_MASK) >>
+ CFG_PLLCTL0_PLLM_SHIFT) + 1;
+ output_div = ((tmp & CFG_PLLCTL0_CLKOD_MASK) >>
+ CFG_PLLCTL0_CLKOD_SHIFT) + 1;
+ ret = ((ret / prediv) * mult) / output_div;
+ }
+ }
+
+ return ret;
+}
+
+unsigned long clk_get_rate(unsigned int clk)
+{
+ unsigned long freq = 0;
+
+ switch (clk) {
+ case core_pll_clk:
+ freq = pll_freq_get(CORE_PLL);
+ break;
+ case pass_pll_clk:
+ freq = pll_freq_get(PASS_PLL);
+ break;
+ case tetris_pll_clk:
+ if (!cpu_is_k2e())
+ freq = pll_freq_get(TETRIS_PLL);
+ break;
+ case ddr3a_pll_clk:
+ freq = pll_freq_get(DDR3A_PLL);
+ break;
+ case ddr3b_pll_clk:
+ if (cpu_is_k2hk())
+ freq = pll_freq_get(DDR3B_PLL);
+ break;
+ case sys_clk0_1_clk:
+ case sys_clk0_clk:
+ freq = pll_freq_get(CORE_PLL) / pll0div_read(1);
+ break;
+ case sys_clk1_clk:
+ return pll_freq_get(CORE_PLL) / pll0div_read(2);
+ break;
+ case sys_clk2_clk:
+ freq = pll_freq_get(CORE_PLL) / pll0div_read(3);
+ break;
+ case sys_clk3_clk:
+ freq = pll_freq_get(CORE_PLL) / pll0div_read(4);
+ break;
+ case sys_clk0_2_clk:
+ freq = clk_get_rate(sys_clk0_clk) / 2;
+ break;
+ case sys_clk0_3_clk:
+ freq = clk_get_rate(sys_clk0_clk) / 3;
+ break;
+ case sys_clk0_4_clk:
+ freq = clk_get_rate(sys_clk0_clk) / 4;
+ break;
+ case sys_clk0_6_clk:
+ freq = clk_get_rate(sys_clk0_clk) / 6;
+ break;
+ case sys_clk0_8_clk:
+ freq = clk_get_rate(sys_clk0_clk) / 8;
+ break;
+ case sys_clk0_12_clk:
+ freq = clk_get_rate(sys_clk0_clk) / 12;
+ break;
+ case sys_clk0_24_clk:
+ freq = clk_get_rate(sys_clk0_clk) / 24;
+ break;
+ case sys_clk1_3_clk:
+ freq = clk_get_rate(sys_clk1_clk) / 3;
+ break;
+ case sys_clk1_4_clk:
+ freq = clk_get_rate(sys_clk1_clk) / 4;
+ break;
+ case sys_clk1_6_clk:
+ freq = clk_get_rate(sys_clk1_clk) / 6;
+ break;
+ case sys_clk1_12_clk:
+ freq = clk_get_rate(sys_clk1_clk) / 12;
+ break;
+ default:
+ break;
+ }
+
+ return freq;
+}