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authorLucas Stach <dev@lynxeye.de>2019-11-09 15:28:32 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2019-11-11 09:15:55 +0100
commitcfffe9368ac4eeda52ed837f8adb41a54cc85e96 (patch)
tree5abcbdf3bc65dabc590258cb90e68baf6e9b502f
parentdaf2ffab24f0dde8c45c34ef82ce29399c897b12 (diff)
downloadbarebox-cfffe9368ac4eeda52ed837f8adb41a54cc85e96.tar.gz
clk: zynq: partially sync with Linux
Sync the clock enum with the clocks used by Linux and the DT binding. Implement AMBA bus clocks and SPI and SDIO peripheral clocks and register a DT clock controller, so the clocks can be looked up by DT handle. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--drivers/clk/zynq/clkc.c87
1 files changed, 71 insertions, 16 deletions
diff --git a/drivers/clk/zynq/clkc.c b/drivers/clk/zynq/clkc.c
index 90ab71f..f30aa82 100644
--- a/drivers/clk/zynq/clkc.c
+++ b/drivers/clk/zynq/clkc.c
@@ -29,10 +29,16 @@
#include <mach/zynq7000-regs.h>
#include <malloc.h>
-enum zynq_clks {
- dummy, ps_clk, arm_pll, ddr_pll, io_pll, uart_clk, uart0, uart1,
- cpu_clk, cpu_6x4x, cpu_3x2x, cpu_2x, cpu_1x,
- gem_clk, gem0, gem1, clks_max
+enum zynq_clk {
+ armpll, ddrpll, iopll,
+ cpu_6or4x, cpu_3or2x, cpu_2x, cpu_1x,
+ ddr2x, ddr3x, dci,
+ lqspi, smc, pcap, gem0, gem1, fclk0, fclk1, fclk2, fclk3, can0, can1,
+ sdio0, sdio1, uart0, uart1, spi0, spi1, dma,
+ usb0_aper, usb1_aper, gem0_aper, gem1_aper,
+ sdio0_aper, sdio1_aper, spi0_aper, spi1_aper, can0_aper, can1_aper,
+ i2c0_aper, i2c1_aper, uart0_aper, uart1_aper, gpio_aper, lqspi_aper,
+ smc_aper, swdt, dbg_trc, dbg_apb, clk_max
};
enum zynq_pll_type {
@@ -51,7 +57,8 @@ enum zynq_pll_type {
#define PLL_CTRL_PWRDOWN (1 << 1)
#define PLL_CTRL_RESET (1 << 0)
-static struct clk *clks[clks_max];
+static struct clk *clks[clk_max];
+static struct clk_onecell_data clk_data;
struct zynq_pll_clk {
struct clk clk;
@@ -401,46 +408,94 @@ static int zynq_clock_probe(struct device_d *dev)
clk_base = IOMEM(iores->start);
- clks[ps_clk] = clk_fixed("ps_clk", ps_clk_rate);
+ clk_fixed("ps_clk", ps_clk_rate);
- clks[arm_pll] = zynq_pll_clk(ZYNQ_PLL_ARM, "arm_pll", clk_base + 0x0);
- clks[ddr_pll] = zynq_pll_clk(ZYNQ_PLL_DDR, "ddr_pll", clk_base + 0x4);
- clks[io_pll] = zynq_pll_clk(ZYNQ_PLL_IO, "io_pll", clk_base + 0x8);
+ clks[armpll] = zynq_pll_clk(ZYNQ_PLL_ARM, "arm_pll", clk_base + 0x0);
+ clks[ddrpll] = zynq_pll_clk(ZYNQ_PLL_DDR, "ddr_pll", clk_base + 0x4);
+ clks[iopll] = zynq_pll_clk(ZYNQ_PLL_IO, "io_pll", clk_base + 0x8);
- clks[uart_clk] = zynq_periph_clk("uart_clk", clk_base + 0x54);
+ zynq_periph_clk("sdio_clk", clk_base + 0x50);
+ clks[sdio0] = clk_gate("sdio0", "sdio_clk", clk_base + 0x50, 0, 0, 0);
+ clks[sdio1] = clk_gate("sdio1", "sdio_clk", clk_base + 0x50, 1, 0, 0);
+ zynq_periph_clk("uart_clk", clk_base + 0x54);
clks[uart0] = clk_gate("uart0", "uart_clk", clk_base + 0x54, 0, 0, 0);
clks[uart1] = clk_gate("uart1", "uart_clk", clk_base + 0x54, 1, 0, 0);
+ zynq_periph_clk("spi_clk", clk_base + 0x58);
+ clks[spi0] = clk_gate("spi0", "spi_clk", clk_base + 0x58, 0, 0, 0);
+ clks[spi1] = clk_gate("spi1", "spi_clk", clk_base + 0x58, 1, 0, 0);
+
clks[gem0] = clk_gate("gem0", "io_pll", clk_base + 0x40, 0, 0, 0);
clks[gem1] = clk_gate("gem1", "io_pll", clk_base + 0x44, 1, 0, 0);
- clks[cpu_clk] = zynq_cpu_clk("cpu_clk", clk_base + 0x20);
+ zynq_cpu_clk("cpu_clk", clk_base + 0x20);
- clks[cpu_6x4x] = zynq_cpu_subclk("cpu_6x4x", CPU_SUBCLK_6X4X,
+ clks[cpu_6or4x] = zynq_cpu_subclk("cpu_6x4x", CPU_SUBCLK_6X4X,
clk_base + 0x20, clk_base + 0xC4);
- clks[cpu_3x2x] = zynq_cpu_subclk("cpu_3x2x", CPU_SUBCLK_3X2X,
+ clks[cpu_3or2x] = zynq_cpu_subclk("cpu_3x2x", CPU_SUBCLK_3X2X,
clk_base + 0x20, clk_base + 0xC4);
clks[cpu_2x] = zynq_cpu_subclk("cpu_2x", CPU_SUBCLK_2X,
clk_base + 0x20, clk_base + 0xC4);
clks[cpu_1x] = zynq_cpu_subclk("cpu_1x", CPU_SUBCLK_1X,
clk_base + 0x20, clk_base + 0xC4);
- clk_register_clkdev(clks[cpu_3x2x], NULL, "arm_smp_twd");
+ clks[dma] = clk_gate("dma", "cpu_2x", clk_base + 0x2C, 0, 0, 0);
+ clks[usb0_aper] = clk_gate("usb0_aper", "cpu_1x",
+ clk_base + 0x2C, 2, 0, 0);
+ clks[usb1_aper] = clk_gate("usb1_aper", "cpu_1x",
+ clk_base + 0x2C, 3, 0, 0);
+ clks[gem0_aper] = clk_gate("gem0_aper", "cpu_1x",
+ clk_base + 0x2C, 6, 0, 0);
+ clks[gem1_aper] = clk_gate("gem1_aper", "cpu_1x",
+ clk_base + 0x2C, 7, 0, 0);
+ clks[sdio0_aper] = clk_gate("sdio0_aper", "cpu_1x",
+ clk_base + 0x2C, 10, 0, 0);
+ clks[sdio1_aper] = clk_gate("sdio1_aper", "cpu_1x",
+ clk_base + 0x2C, 11, 0, 0);
+ clks[spi0_aper] = clk_gate("spi0_aper", "cpu_1x",
+ clk_base + 0x2C, 14, 0, 0);
+ clks[spi1_aper] = clk_gate("spi1_aper", "cpu_1x",
+ clk_base + 0x2C, 15, 0, 0);
+ clks[can0_aper] = clk_gate("can0_aper", "cpu_1x",
+ clk_base + 0x2C, 16, 0, 0);
+ clks[can1_aper] = clk_gate("can1_aper", "cpu_1x",
+ clk_base + 0x2C, 17, 0, 0);
+ clks[i2c0_aper] = clk_gate("i2c0_aper", "cpu_1x",
+ clk_base + 0x2C, 18, 0, 0);
+ clks[i2c1_aper] = clk_gate("i2c1_aper", "cpu_1x",
+ clk_base + 0x2C, 19, 0, 0);
+ clks[uart0_aper] = clk_gate("uart0_aper", "cpu_1x",
+ clk_base + 0x2C, 20, 0, 0);
+ clks[uart1_aper] = clk_gate("uart1_aper", "cpu_1x",
+ clk_base + 0x2C, 21, 0, 0);
+ clks[gpio_aper] = clk_gate("gpio_aper", "cpu_1x",
+ clk_base + 0x2C, 22, 0, 0);
+ clks[lqspi_aper] = clk_gate("lqspi_aper", "cpu_1x",
+ clk_base + 0x2C, 23, 0, 0);
+ clks[smc_aper] = clk_gate("smc_aper", "cpu_1x",
+ clk_base + 0x2C, 24, 0, 0);
+
+ clk_register_clkdev(clks[cpu_3or2x], NULL, "arm_smp_twd");
clk_register_clkdev(clks[uart0], NULL, "zynq_serial0");
clk_register_clkdev(clks[uart1], NULL, "zynq_serial1");
clk_register_clkdev(clks[gem0], NULL, "macb0");
clk_register_clkdev(clks[gem1], NULL, "macb1");
- clkdev_add_physbase(clks[cpu_3x2x], CORTEXA9_SCU_TIMER_BASE_ADDR, NULL);
+ clkdev_add_physbase(clks[cpu_3or2x], CORTEXA9_SCU_TIMER_BASE_ADDR, NULL);
clkdev_add_physbase(clks[uart1], ZYNQ_UART1_BASE_ADDR, NULL);
+ clk_data.clks = clks;
+ clk_data.clk_num = ARRAY_SIZE(clks);
+ of_clk_add_provider(dev->device_node, of_clk_src_onecell_get,
+ &clk_data);
+
return 0;
}
static __maybe_unused struct of_device_id zynq_clock_dt_ids[] = {
{
- .compatible = "xlnx,zynq-clock",
+ .compatible = "xlnx,ps7-clkc",
}, {
/* sentinel */
}