[PATCH 2/7] clk: qcom: ipq8074: disable USB GDSC-s SW_COLLAPSE

Robert Marko
2022-04-25T18:22:59Z

Like in IPQ6018 Qualcomm intentionally disables the SW_COLLAPSE on the USB
GDSC-s in the downstream 5.4 kernel.

This could potentially be better handled by utilizing the GDSC driver, but
I am not familiar with it nor do I have datasheets.

Signed-off-by: Robert Marko <robimarko@gmail.com>
---
drivers/clk/qcom/gcc-ipq8074.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/clk/qcom/gcc-ipq8074.c b/drivers/clk/qcom/gcc-ipq8074.c
index 2ebd1462db78..65249a03a672 100644
--- a/drivers/clk/qcom/gcc-ipq8074.c
+++ b/drivers/clk/qcom/gcc-ipq8074.c
@@ -4806,6 +4806,11 @@ static int gcc_ipq8074_probe(struct platform_device *pdev)
if (IS_ERR(regmap))
return PTR_ERR(regmap);

+ /* Disable SW_COLLAPSE for USB0 GDSCR */
+ regmap_update_bits(regmap, 0x3e078, BIT(0), 0x0);
+ /* Disable SW_COLLAPSE for USB1 GDSCR */
+ regmap_update_bits(regmap, 0x3f078, BIT(0), 0x0);
+
clk_alpha_pll_configure(&ubi32_pll_main, regmap, &ubi32_pll_config);
clk_alpha_pll_configure(&nss_crypto_pll_main, regmap,
&nss_crypto_pll_config);
--
2.35.1