[PATCH 2/2] clk: ti: get register address from device tree
From: Dario Binacchi <hidden>
Date: 2021-04-02 19:22:14
Also in:
linux-omap, lkml
Subsystem:
common clk framework, the rest, ti clock driver · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds, Tero Kristo
Until now, only the register offset was retrieved from the device tree to be added, during access, to a common base address for the clocks. If possible, we try to retrieve the physical address of the register directly from the device tree. Signed-off-by: Dario Binacchi <redacted> --- drivers/clk/ti/clk.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c
index 3da33c786d77..938f5a2cb425 100644
--- a/drivers/clk/ti/clk.c
+++ b/drivers/clk/ti/clk.c@@ -265,9 +265,21 @@ int __init ti_clk_retry_init(struct device_node *node, void *user, int ti_clk_get_reg_addr(struct device_node *node, int index, struct clk_omap_reg *reg) { + const __be32 *addrp; + u64 size, addr = OF_BAD_ADDR; + unsigned int flags; u32 val; int i; + addrp = of_get_address(node, index, &size, &flags); + if (addrp) + addr = of_translate_address(node, addrp); + + if (addr != OF_BAD_ADDR) { + reg->ptr = ioremap(addr, sizeof(u32)); + return 0; + } + for (i = 0; i < CLK_MAX_MEMMAPS; i++) { if (clocks_node_ptr[i] == node->parent) break;
@@ -287,7 +299,6 @@ int ti_clk_get_reg_addr(struct device_node *node, int index, reg->offset = val; reg->ptr = NULL; - return 0; }
--
2.17.1