void clock_init_uart(void)
{
+#if CONFIG_CONS_INDEX < 5
struct sunxi_ccm_reg *const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
-#if CONFIG_CONS_INDEX < 5
/* uart clock source is apb2 */
writel(APB2_CLK_SRC_OSC24M|
APB2_CLK_RATE_N_1|
/* enable R_PIO and R_UART clocks, and de-assert resets */
prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_UART);
#endif
-
- /* Dup with clock_init_safe(), drop once sun6i SPL support lands */
- writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg);
}
int clock_twi_onoff(int port, int state)
{
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ const int p = 0;
int k = 1;
int m = 1;
CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT,
&ccm->cpu_axi_cfg);
- /* PLL1 rate = 24000000 * n * k / m */
- writel(CCM_PLL1_CTRL_EN | CCM_PLL1_CTRL_MAGIC |
+ /*
+ * sun6i: PLL1 rate = ((24000000 * n * k) >> 0) / m (p is ignored)
+ * sun8i: PLL1 rate = ((24000000 * n * k) >> p) / m
+ */
+ writel(CCM_PLL1_CTRL_EN | CCM_PLL1_CTRL_P(p) |
CCM_PLL1_CTRL_N(clk / (24000000 * k / m)) |
CCM_PLL1_CTRL_K(k) | CCM_PLL1_CTRL_M(m), &ccm->pll1_cfg);
sdelay(200);
}
#endif
-void clock_set_pll5(unsigned int clk)
+void clock_set_pll3(unsigned int clk)
{
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
- const int k = 2;
- const int m = 1;
+ const int m = 8; /* 3 MHz steps just like sun4i, sun5i and sun7i */
+
+ if (clk == 0) {
+ clrbits_le32(&ccm->pll3_cfg, CCM_PLL3_CTRL_EN);
+ return;
+ }
+
+ /* PLL3 rate = 24000000 * n / m */
+ writel(CCM_PLL3_CTRL_EN | CCM_PLL3_CTRL_INTEGER_MODE |
+ CCM_PLL3_CTRL_N(clk / (24000000 / m)) | CCM_PLL3_CTRL_M(m),
+ &ccm->pll3_cfg);
+}
+
+void clock_set_pll5(unsigned int clk, bool sigma_delta_enable)
+{
+ struct sunxi_ccm_reg * const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ const int max_n = 32;
+ int k = 1, m = 2;
+
+ if (sigma_delta_enable)
+ writel(CCM_PLL5_PATTERN, &ccm->pll5_pattern_cfg);
/* PLL5 rate = 24000000 * n * k / m */
- writel(CCM_PLL5_CTRL_EN | CCM_PLL5_CTRL_UPD |
+ if (clk > 24000000 * k * max_n / m) {
+ m = 1;
+ if (clk > 24000000 * k * max_n / m)
+ k = 2;
+ }
+ writel(CCM_PLL5_CTRL_EN |
+ (sigma_delta_enable ? CCM_PLL5_CTRL_SIGMA_DELTA_EN : 0) |
+ CCM_PLL5_CTRL_UPD |
CCM_PLL5_CTRL_N(clk / (24000000 * k / m)) |
CCM_PLL5_CTRL_K(k) | CCM_PLL5_CTRL_M(m), &ccm->pll5_cfg);
udelay(5500);
}
+#ifdef CONFIG_MACH_SUN6I
+void clock_set_mipi_pll(unsigned int clk)
+{
+ struct sunxi_ccm_reg * const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ unsigned int k, m, n, value, diff;
+ unsigned best_k = 0, best_m = 0, best_n = 0, best_diff = 0xffffffff;
+ unsigned int src = clock_get_pll3();
+
+ /* All calculations are in KHz to avoid overflows */
+ clk /= 1000;
+ src /= 1000;
+
+ /* Pick the closest lower clock */
+ for (k = 1; k <= 4; k++) {
+ for (m = 1; m <= 16; m++) {
+ for (n = 1; n <= 16; n++) {
+ value = src * n * k / m;
+ if (value > clk)
+ continue;
+
+ diff = clk - value;
+ if (diff < best_diff) {
+ best_diff = diff;
+ best_k = k;
+ best_m = m;
+ best_n = n;
+ }
+ if (diff == 0)
+ goto done;
+ }
+ }
+ }
+
+done:
+ writel(CCM_MIPI_PLL_CTRL_EN | CCM_MIPI_PLL_CTRL_LDO_EN |
+ CCM_MIPI_PLL_CTRL_N(best_n) | CCM_MIPI_PLL_CTRL_K(best_k) |
+ CCM_MIPI_PLL_CTRL_M(best_m), &ccm->mipi_pll_cfg);
+}
+#endif
+
+#ifdef CONFIG_MACH_SUN8I_A33
+void clock_set_pll11(unsigned int clk, bool sigma_delta_enable)
+{
+ struct sunxi_ccm_reg * const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+
+ if (sigma_delta_enable)
+ writel(CCM_PLL11_PATTERN, &ccm->pll5_pattern_cfg);
+
+ writel(CCM_PLL11_CTRL_EN | CCM_PLL11_CTRL_UPD |
+ (sigma_delta_enable ? CCM_PLL11_CTRL_SIGMA_DELTA_EN : 0) |
+ CCM_PLL11_CTRL_N(clk / 24000000), &ccm->pll11_cfg);
+
+ while (readl(&ccm->pll11_cfg) & CCM_PLL11_CTRL_UPD)
+ ;
+}
+#endif
+
+unsigned int clock_get_pll3(void)
+{
+ struct sunxi_ccm_reg *const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ uint32_t rval = readl(&ccm->pll3_cfg);
+ int n = ((rval & CCM_PLL3_CTRL_N_MASK) >> CCM_PLL3_CTRL_N_SHIFT) + 1;
+ int m = ((rval & CCM_PLL3_CTRL_M_MASK) >> CCM_PLL3_CTRL_M_SHIFT) + 1;
+
+ /* Multiply by 1000 after dividing by m to avoid integer overflows */
+ return (24000 * n / m) * 1000;
+}
+
unsigned int clock_get_pll6(void)
{
struct sunxi_ccm_reg *const ccm =
int k = ((rval & CCM_PLL6_CTRL_K_MASK) >> CCM_PLL6_CTRL_K_SHIFT) + 1;
return 24000000 * n * k / 2;
}
+
+unsigned int clock_get_mipi_pll(void)
+{
+ struct sunxi_ccm_reg *const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ uint32_t rval = readl(&ccm->mipi_pll_cfg);
+ unsigned int n = ((rval & CCM_MIPI_PLL_CTRL_N_MASK) >> CCM_MIPI_PLL_CTRL_N_SHIFT) + 1;
+ unsigned int k = ((rval & CCM_MIPI_PLL_CTRL_K_MASK) >> CCM_MIPI_PLL_CTRL_K_SHIFT) + 1;
+ unsigned int m = ((rval & CCM_MIPI_PLL_CTRL_M_MASK) >> CCM_MIPI_PLL_CTRL_M_SHIFT) + 1;
+ unsigned int src = clock_get_pll3();
+
+ /* Multiply by 1000 after dividing by m to avoid integer overflows */
+ return ((src / 1000) * n * k / m) * 1000;
+}
+
+void clock_set_de_mod_clock(u32 *clk_cfg, unsigned int hz)
+{
+ int pll = clock_get_pll6() * 2;
+ int div = 1;
+
+ while ((pll / div) > hz)
+ div++;
+
+ writel(CCM_DE_CTRL_GATE | CCM_DE_CTRL_PLL6_2X | CCM_DE_CTRL_M(div),
+ clk_cfg);
+}