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clk: qoriq: Add ls2080a support.
LS2080A is the first implementation of the chassis 3 clockgen, which has a different register layout than previous chips. It is also little endian, unlike previous chips. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org>
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@ -121,7 +121,7 @@ config COMMON_CLK_AXI_CLKGEN
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config CLK_QORIQ
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bool "Clock driver for Freescale QorIQ platforms"
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depends on (PPC_E500MC || ARM) && OF
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depends on (PPC_E500MC || ARM || ARM64) && OF
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---help---
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This adds the clock driver support for Freescale QorIQ platforms
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using common clock framework.
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@ -68,7 +68,10 @@ struct clockgen;
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* If not set, cmux freq must be >= platform pll/2
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*/
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#define CG_CMUX_GE_PLAT 1
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#define CG_PLL_8BIT 2 /* PLLCnGSR[CFG] is 8 bits, not 6 */
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#define CG_VER3 4 /* version 3 cg: reg layout different */
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#define CG_LITTLE_ENDIAN 8
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struct clockgen_chipinfo {
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const char *compat, *guts_compat;
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@ -94,6 +97,26 @@ struct clockgen {
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static struct clockgen clockgen;
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static void cg_out(struct clockgen *cg, u32 val, u32 __iomem *reg)
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{
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if (cg->info.flags & CG_LITTLE_ENDIAN)
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iowrite32(val, reg);
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else
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iowrite32be(val, reg);
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}
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static u32 cg_in(struct clockgen *cg, u32 __iomem *reg)
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{
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u32 val;
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if (cg->info.flags & CG_LITTLE_ENDIAN)
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val = ioread32(reg);
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else
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val = ioread32be(reg);
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return val;
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}
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static const struct clockgen_muxinfo p2041_cmux_grp1 = {
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{
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[0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
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@ -428,6 +451,17 @@ static const struct clockgen_chipinfo chipinfo[] = {
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},
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.pll_mask = 0x03,
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},
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{
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.compat = "fsl,ls2080a-clockgen",
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.cmux_groups = {
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&clockgen2_cmux_cga12, &clockgen2_cmux_cgb
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},
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.cmux_to_group = {
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0, 0, 1, 1, -1
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},
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.pll_mask = 0x37,
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.flags = CG_VER3 | CG_LITTLE_ENDIAN,
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},
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{
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.compat = "fsl,p2041-clockgen",
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.guts_compat = "fsl,qoriq-device-config-1.0",
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@ -575,7 +609,7 @@ static int mux_set_parent(struct clk_hw *hw, u8 idx)
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return -EINVAL;
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clksel = hwc->parent_to_clksel[idx];
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iowrite32be((clksel << CLKSEL_SHIFT) & CLKSEL_MASK, hwc->reg);
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cg_out(hwc->cg, (clksel << CLKSEL_SHIFT) & CLKSEL_MASK, hwc->reg);
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return 0;
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}
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@ -586,7 +620,7 @@ static u8 mux_get_parent(struct clk_hw *hw)
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u32 clksel;
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s8 ret;
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clksel = (ioread32be(hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
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clksel = (cg_in(hwc->cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
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ret = hwc->clksel_to_parent[clksel];
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if (ret < 0) {
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@ -705,7 +739,7 @@ static struct clk * __init create_one_cmux(struct clockgen *cg, int idx)
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* default clksel) may be inappropriately excluded on certain
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* chips.
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*/
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clksel = (ioread32be(hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
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clksel = (cg_in(cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
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div = get_pll_div(cg, hwc, clksel);
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if (!div)
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return NULL;
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@ -874,13 +908,36 @@ static void __init create_one_pll(struct clockgen *cg, int idx)
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if (!(cg->info.pll_mask & (1 << idx)))
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return;
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if (idx == PLATFORM_PLL)
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reg = cg->regs + 0xc00;
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else
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reg = cg->regs + 0x800 + 0x20 * (idx - 1);
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if (cg->info.flags & CG_VER3) {
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switch (idx) {
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case PLATFORM_PLL:
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reg = cg->regs + 0x60080;
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break;
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case CGA_PLL1:
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reg = cg->regs + 0x80;
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break;
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case CGA_PLL2:
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reg = cg->regs + 0xa0;
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break;
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case CGB_PLL1:
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reg = cg->regs + 0x10080;
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break;
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case CGB_PLL2:
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reg = cg->regs + 0x100a0;
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break;
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default:
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WARN_ONCE(1, "index %d\n", idx);
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return;
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}
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} else {
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if (idx == PLATFORM_PLL)
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reg = cg->regs + 0xc00;
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else
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reg = cg->regs + 0x800 + 0x20 * (idx - 1);
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}
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/* Get the multiple of PLL */
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mult = ioread32be(reg);
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mult = cg_in(cg, reg);
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/* Check if this PLL is disabled */
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if (mult & PLL_KILL) {
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@ -888,7 +945,8 @@ static void __init create_one_pll(struct clockgen *cg, int idx)
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return;
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}
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if ((cg->info.flags & CG_PLL_8BIT) && idx != PLATFORM_PLL)
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if ((cg->info.flags & CG_VER3) ||
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((cg->info.flags & CG_PLL_8BIT) && idx != PLATFORM_PLL))
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mult = (mult & GENMASK(8, 1)) >> 1;
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else
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mult = (mult & GENMASK(6, 1)) >> 1;
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@ -1169,6 +1227,7 @@ err:
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CLK_OF_DECLARE(qoriq_clockgen_1, "fsl,qoriq-clockgen-1.0", clockgen_init);
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CLK_OF_DECLARE(qoriq_clockgen_2, "fsl,qoriq-clockgen-2.0", clockgen_init);
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CLK_OF_DECLARE(qoriq_clockgen_ls1021a, "fsl,ls1021a-clockgen", clockgen_init);
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CLK_OF_DECLARE(qoriq_clockgen_ls2080a, "fsl,ls2080a-clockgen", clockgen_init);
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/* Legacy nodes */
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CLK_OF_DECLARE(qoriq_sysclk_1, "fsl,qoriq-sysclk-1.0", sysclk_init);
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