riscv: sifive_u: Reference PRCI clocks in UART and ethernet nodes

Now that we have added a PRCI node, update existing UART and ethernet
nodes to reference PRCI as their clock sources, to keep in sync with
the Linux kernel device tree.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index f6b868f49b0d39ea2bac250be279c9c04a7ad277..9e698a11c468fe529eb8d028da91b8e5a73ee468 100644 (file)
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -78,7 +78,7 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
     int cpu;
     uint32_t *cells;
     char *nodename;
-    char ethclk_names[] = "pclk\0hclk\0tx_clk";
+    char ethclk_names[] = "pclk\0hclk";
     uint32_t plic_phandle, prci_phandle, ethclk_phandle, phandle = 1;
     uint32_t uartclk_phandle;
     uint32_t hfclk_phandle, rtcclk_phandle;
@@ -263,7 +263,7 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
     qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
     qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_GEM_IRQ);
     qemu_fdt_setprop_cells(fdt, nodename, "clocks",
-        ethclk_phandle, ethclk_phandle, ethclk_phandle);
+        prci_phandle, PRCI_CLK_GEMGXLPLL, prci_phandle, PRCI_CLK_GEMGXLPLL);
     qemu_fdt_setprop(fdt, nodename, "clock-names", ethclk_names,
         sizeof(ethclk_names));
     qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 1);
@@ -293,7 +293,8 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
     qemu_fdt_setprop_cells(fdt, nodename, "reg",
         0x0, memmap[SIFIVE_U_UART0].base,
         0x0, memmap[SIFIVE_U_UART0].size);
-    qemu_fdt_setprop_cell(fdt, nodename, "clocks", uartclk_phandle);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+        prci_phandle, PRCI_CLK_TLCLK);
     qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
     qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_UART0_IRQ);
 

diff --git a/include/hw/riscv/sifive_u_prci.h b/include/hw/riscv/sifive_u_prci.h
index 60a2eab0e907708a8dc3298290bf5bf06c6dfaf7..0a531fdadc7f70178e758cf6b1befbee6fdebd36 100644 (file)
--- a/include/hw/riscv/sifive_u_prci.h
+++ b/include/hw/riscv/sifive_u_prci.h
@@ -78,4 +78,14 @@ typedef struct SiFiveUPRCIState {
     uint32_t clkmuxstatus;
 } SiFiveUPRCIState;
 
+/*
+ * Clock indexes for use by Device Tree data and the PRCI driver.
+ *
+ * These values are from sifive-fu540-prci.h in the Linux kernel.
+ */
+#define PRCI_CLK_COREPLL        0
+#define PRCI_CLK_DDRPLL         1
+#define PRCI_CLK_GEMGXLPLL      2
+#define PRCI_CLK_TLCLK          3
+
 #endif /* HW_SIFIVE_U_PRCI_H */