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Message-Id: <20221114111513.1436165-4-herve.codina@bootlin.com>
Date: Mon, 14 Nov 2022 12:15:09 +0100
From: Herve Codina <herve.codina@...tlin.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Herve Codina <herve.codina@...tlin.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Magnus Damm <magnus.damm@...il.com>,
Gareth Williams <gareth.williams.jx@...esas.com>
Cc: linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-usb@...r.kernel.org,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Miquel Raynal <miquel.raynal@...tlin.com>
Subject: [PATCH v2 3/7] soc: renesas: r9a06g032-sysctrl: Handle h2mode device-tree property
Handle the h2mode property and forces the CFG_USB[H2MODE] bit
accordingly.
Signed-off-by: Herve Codina <herve.codina@...tlin.com>
---
drivers/clk/renesas/r9a06g032-clocks.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/clk/renesas/r9a06g032-clocks.c b/drivers/clk/renesas/r9a06g032-clocks.c
index 9ee056498714..7a5a96c0d082 100644
--- a/drivers/clk/renesas/r9a06g032-clocks.c
+++ b/drivers/clk/renesas/r9a06g032-clocks.c
@@ -946,6 +946,7 @@ static int __init r9a06g032_clocks_probe(struct platform_device *pdev)
struct clk *mclk;
unsigned int i;
u16 uart_group_sel[2];
+ u32 usb, h2mode;
int error;
clocks = devm_kzalloc(dev, sizeof(*clocks), GFP_KERNEL);
@@ -966,6 +967,26 @@ static int __init r9a06g032_clocks_probe(struct platform_device *pdev)
clocks->reg = of_iomap(np, 0);
if (WARN_ON(!clocks->reg))
return -ENOMEM;
+
+ error = of_property_read_u32(np, "renesas,h2mode", &h2mode);
+ if (!error) {
+ usb = readl(clocks->reg + R9A06G032_SYSCTRL_USB);
+ switch (h2mode) {
+ case 0:
+ /* 1 host, 1 device */
+ usb &= ~R9A06G032_SYSCTRL_USB_H2MODE;
+ break;
+ case 1:
+ /* 2 hosts */
+ usb |= R9A06G032_SYSCTRL_USB_H2MODE;
+ break;
+ default:
+ dev_err(dev, "invalid h2mode %d\n", h2mode);
+ return -EINVAL;
+ }
+ writel(usb, clocks->reg + R9A06G032_SYSCTRL_USB);
+ }
+
for (i = 0; i < ARRAY_SIZE(r9a06g032_clocks); ++i) {
const struct r9a06g032_clkdesc *d = &r9a06g032_clocks[i];
const char *parent_name = d->source ?
--
2.38.1
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