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Subject[PATCH] clk: qcom: sc8280xp: add parent to gcc_ufs_phy_axi_clk for sa8540p
Date
The sa8540p automotive board has the same SOC as the sc8280xp. In order
to get the first UFS controller working on the sa8540p,
GCC_UFS_REF_CLKREF_CLK needs to be setup as a parent to
GCC_UFS_PHY_AXI_CLK.

This clock name came from the DTS for the downstream MSM 5.4 kernel
sources for the sa8540p. It also references GCC_UFS_CARD_CLKREF_CLK,
however that wasn't needed to get the first UFS controller working.

Signed-off-by: Brian Masney <bmasney@redhat.com>
---
I originally added this under GCC_UFS_PHY_PHY_AUX_CLK since that's
what's in the downstream DTS. I was getting errors about
GCC_UFS_PHY_AXI_CLK being stuck at off so I moved it there.

Also I don't have access to any documentation for this board so I'm
hoping that someone with docs access can verify that this is the
appropriate place to put this.

drivers/clk/qcom/gcc-sc8280xp.c | 27 ++++++++++++++-------------
1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/drivers/clk/qcom/gcc-sc8280xp.c b/drivers/clk/qcom/gcc-sc8280xp.c
index 4b894442fdf5..4639b50da418 100644
--- a/drivers/clk/qcom/gcc-sc8280xp.c
+++ b/drivers/clk/qcom/gcc-sc8280xp.c
@@ -5685,6 +5685,19 @@ static struct clk_branch gcc_ufs_phy_ahb_clk = {
},
};

+static struct clk_branch gcc_ufs_ref_clkref_clk = {
+ .halt_reg = 0x8c058,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x8c058,
+ .enable_mask = BIT(0),
+ .hw.init = &(const struct clk_init_data) {
+ .name = "gcc_ufs_ref_clkref_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
static struct clk_branch gcc_ufs_phy_axi_clk = {
.halt_reg = 0x77010,
.halt_check = BRANCH_HALT_VOTED,
@@ -5696,6 +5709,7 @@ static struct clk_branch gcc_ufs_phy_axi_clk = {
.hw.init = &(const struct clk_init_data) {
.name = "gcc_ufs_phy_axi_clk",
.parent_hws = (const struct clk_hw*[]){
+ &gcc_ufs_ref_clkref_clk.clkr.hw,
&gcc_ufs_phy_axi_clk_src.clkr.hw,
},
.num_parents = 1,
@@ -5899,19 +5913,6 @@ static struct clk_branch gcc_ufs_phy_unipro_core_hw_ctl_clk = {
},
};

-static struct clk_branch gcc_ufs_ref_clkref_clk = {
- .halt_reg = 0x8c058,
- .halt_check = BRANCH_HALT,
- .clkr = {
- .enable_reg = 0x8c058,
- .enable_mask = BIT(0),
- .hw.init = &(const struct clk_init_data) {
- .name = "gcc_ufs_ref_clkref_clk",
- .ops = &clk_branch2_ops,
- },
- },
-};
-
static struct clk_branch gcc_usb2_hs0_clkref_clk = {
.halt_reg = 0x8c044,
.halt_check = BRANCH_HALT,
--
2.36.1
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