From: Dario Binacchi <dariobin@libero.it>
To: linux-kernel@vger.kernel.org
Cc: Dario Binacchi <dariobin@libero.it>,
Bin Meng <bmeng.cn@gmail.com>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, Tero Kristo <kristo@kernel.org>,
linux-clk@vger.kernel.org, linux-omap@vger.kernel.org
Subject: [PATCH 2/2] clk: ti: get register address from device tree
Date: Fri, 2 Apr 2021 21:20:54 +0200 [thread overview]
Message-ID: <20210402192054.7934-3-dariobin@libero.it> (raw)
In-Reply-To: <20210402192054.7934-1-dariobin@libero.it>
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 <dariobin@libero.it>
---
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
next prev parent reply other threads:[~2021-04-02 19:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-02 19:20 [PATCH 0/2] fdt: translate address if #size-cells = <0> Dario Binacchi
2021-04-02 19:20 ` [PATCH 1/2] " Dario Binacchi
2021-04-02 19:20 ` Dario Binacchi [this message]
2021-04-06 6:02 ` [PATCH 2/2] clk: ti: get register address from device tree Tero Kristo
2021-04-06 14:06 ` [PATCH 0/2] fdt: translate address if #size-cells = <0> Rob Herring
2021-04-06 22:02 ` Dario Binacchi
2021-04-07 1:16 ` Rob Herring
2021-04-07 7:07 ` Dario Binacchi
2021-04-07 12:52 ` Rob Herring
2021-04-07 13:21 ` Tero Kristo
2021-04-08 20:24 ` Dario Binacchi
2021-04-09 10:32 ` Tero Kristo
2021-04-11 19:30 ` Dario Binacchi
2021-04-12 7:41 ` Tero Kristo
2021-04-14 20:39 ` Dario Binacchi
2021-04-17 8:37 ` Tony Lindgren
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